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See detailQue veut dire FLEGT ? Et pourquoi au Gabon ?
Moumbogou, Carl; Meunier, Quentin; Mvou Biyogo, T. et al

E-print/Working paper (2015)

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See detailMaintaining national culture abroad. Countries of origin, culture and diaspora
Gsir, Sonia ULg; Mescoli, Elsa ULg

Report (2015)

Within the framework of the INTERACT project, this paper aims to shed light onto a specific facet of the role of sending countries in migrants' integration processes: culture. Culture is analysed as one ... [more ▼]

Within the framework of the INTERACT project, this paper aims to shed light onto a specific facet of the role of sending countries in migrants' integration processes: culture. Culture is analysed as one of the tools that both migrants and countries of origin resort to in order to maintain reciprocal ties after migration. Following a brief presentation of the anthropological and sociological definitions of culture and the consequent notion of 'cultural identity' on which the analysis builds, we study the concrete implementation of these dynamics. In particular, our attention is deployed at three levels: the level of migrants' everyday practices (including the use of the origin language); the policy level (pertaining to both diaspora and integration); and the association level (cultural centres in particular). Through the study of several transversal examples, we consider the broader issue at stake in this paper: the possible connection between migrants' performance in the culture of their country of origin and integration processes. We take into account the European legal framework within which both migrants and national governments function, and the influence it has on discourses and national and international policies addressing integration issues. We reach the conclusion that no causal or univocal link can be established between cultural practices and integration, for several reasons: a variety of factors are at play in integration processes within multi-cultural urban spaces, including socio-economic issues and power relations, which are crucial; culture itself is a changing and combined set of behaviours which determine dynamic and multiple belongings and which need a comprehensive approach; and identities shape the interaction among cultures - which is why we finally state the usefulness of the notion of 'ethnicity'. [less ▲]

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See detailGalectin expression in cancer diagnosis and prognosis: a systematic review
Thijssen, Victor; Heusschen, Roy ULg; CAERS, Jo ULg et al

in Biochimica et Biophysica Acta - Reviews on Cancer (2015)

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See detailComment l'apprentissage du concept "genre" se construit-il tout au long de la scolarité ?
Simons, Germain ULg; Delbrassine, Daniel ULg; Van Hoof, Florence ULg

Diverse speeche and writing (2015)

Par "genre", nous entendons des "types de textes ", pris au sens large, tant à l'oral qu'à l'écrit (exposés, débats divers, entretiens d'embauche, synthèses, CV, "graded-readers", histoires courtes ... [more ▼]

Par "genre", nous entendons des "types de textes ", pris au sens large, tant à l'oral qu'à l'écrit (exposés, débats divers, entretiens d'embauche, synthèses, CV, "graded-readers", histoires courtes, contes, romans et albums de jeunesse. [less ▲]

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See detailQuantitative temperature monitoring of a heat tracing experiment using cross-borehole ERT
Hermans, Thomas ULg; Wildemeersch, Samuel ULg; Jamin, Pierre ULg et al

in Geothermics (2015), 53

The growing demand for renewable energy leads to an increase in the development of geothermal energy projects and heat has become a common tracer in hydrology and hydrogeology. Designing geothermal ... [more ▼]

The growing demand for renewable energy leads to an increase in the development of geothermal energy projects and heat has become a common tracer in hydrology and hydrogeology. Designing geothermal systems requires a multidisciplinary approach including geological and hydrogeological aspects. In this context, electrical resistivity tomography (ERT) can bring relevant, qualitative and quantitative information on the temperature distribution in operating shallow geothermal systems or during heat tracing experiments. We followed a heat tracing experiment in an alluvial aquifer using cross-borehole time-lapse ERT. Heated water was injected in a well while water of the aquifer was extracted at another well. An ERT section was set up across the main flow direction. The results of ERT were transformed into temperature using calibrated petrophysical relationships. These ERT-derived temperatures were then compared to direct temperature measurements in control piezometers collected with distributed temperature sensing (DTS) and groundwater temperature loggers. Spatially, it enabled to map the horizontal and vertical extent of the heated water plume, as well as the zones where maximum temperatures occurred. Quantitatively, the temperatures and breakthrough curves estimated from ERT were in good agreement with the ones observed directly during the rise and maximum of the curve. An overestimation, likely related to 3D effects, was observed for the tail of the heat breakthrough curve. The error made on temperature can be estimated to be between 10 to 20 %, which is a fair value for indirect measurements. From our data, we estimated a quantification threshold for temperature variation of 1.2°C. These results suggest that ERT should be considered when designing heat tracing experiments or geothermal systems. It could help also to assess the geometrical complexity of the concerned reservoirs. It also appears that ERT could be a useful tool to monitor and control geothermal systems once they are in operation. [less ▲]

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See detailTrebananib (AMG 386) plus weekly paclitaxel with or without bevacizumab as first-line therapy for HER2-negative locally recurrent or metastatic breast cancer: A phase 2 randomized study.
Dieras, Veronique; Wildiers, Hans; Jassem, Jacek et al

in Breast (Edinburgh, Scotland) (2015), 24

INTRODUCTION: This phase 2 randomized study evaluated trebananib (AMG 386), a peptide-Fc fusion protein that inhibits angiogenesis by neutralizing the interaction of angiopoietin-1 and -2 with Tie2, in ... [more ▼]

INTRODUCTION: This phase 2 randomized study evaluated trebananib (AMG 386), a peptide-Fc fusion protein that inhibits angiogenesis by neutralizing the interaction of angiopoietin-1 and -2 with Tie2, in combination with paclitaxel with or without bevacizumab in previously untreated patients with HER2-negative locally recurrent/metastatic breast cancer. METHODS: Patients received paclitaxel 90 mg/m2 once weekly (3-weeks-on/1-week-off) and were randomly assigned 1:1:1:1 to also receive blinded bevacizumab 10 mg/kg once every 2 weeks plus either trebananib 10 mg/kg once weekly (Arm A) or 3 mg/kg once weekly (Arm B), or placebo (Arm C); or open-label trebananib 10 mg/kg once a week (Arm D). Progression-free survival was the primary endpoint. RESULTS: In total, 228 patients were randomized. Median estimated progression-free survival for Arms A, B, C, and D was 11.3, 9.2, 12.2, and 10 months, respectively. Hazard ratios (95% CI) for Arms A, B, and D versus Arm C were 0.98 (0.61-1.59), 1.12 (0.70-1.80), and 1.28 (0.79-2.09), respectively. The objective response rate was 71% in Arm A, 51% in Arm B, 60% in Arm C, and 46% in Arm D. The incidence of grade 3/4/5 adverse events was 71/9/4%, 61/14/5%, 62/16/3%, and 52/4/7% in Arms A/B/C/D. In Arm D, median progression-free survival was 12.8 and 7.4 months for those with high and low trebananib exposure (AUCss >/= 8.4 versus < 8.4 mg.h/mL), respectively. CONCLUSIONS: There was no apparent prolongation of estimated progression-free survival with the addition of trebananib to paclitaxel and bevacizumab at the doses tested. Toxicity was manageable. Exposure-response analyses support evaluation of combinations incorporating trebananib at doses > 10 mg/kg in this setting. TRIAL REGISTRATION: ClinicalTrials.gov, NCT00511459. [less ▲]

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See detailRegional volumes and spatial volumetric distribution of gray matter in the gender dysphoric brain.
Hoekzema, Elseline; Schagen, Sebastian E. E.; Kreukels, Baudewijntje P. C. et al

in Psychoneuroendocrinology (2015), 55C

The sexual differentiation of the brain is primarily driven by gonadal hormones during fetal development. Leading theories on the etiology of gender dysphoria (GD) involve deviations herein. To examine ... [more ▼]

The sexual differentiation of the brain is primarily driven by gonadal hormones during fetal development. Leading theories on the etiology of gender dysphoria (GD) involve deviations herein. To examine whether there are signs of a sex-atypical brain development in GD, we quantified regional neural gray matter (GM) volumes in 55 female-to-male and 38 male-to-female adolescents, 44 boys and 52 girls without GD and applied both univariate and multivariate analyses. In girls, more GM volume was observed in the left superior medial frontal cortex, while boys had more volume in the bilateral superior posterior hemispheres of the cerebellum and the hypothalamus. Regarding the GD groups, at whole-brain level they differed only from individuals sharing their gender identity but not from their natal sex. Accordingly, using multivariate pattern recognition analyses, the GD groups could more accurately be automatically discriminated from individuals sharing their gender identity than those sharing their natal sex based on spatially distributed GM patterns. However, region of interest analyses indicated less GM volume in the right cerebellum and more volume in the medial frontal cortex in female-to-males in comparison to girls without GD, while male-to-females had less volume in the bilateral cerebellum and hypothalamus than natal boys. Deviations from the natal sex within sexually dimorphic structures were also observed in the untreated subsamples. Our findings thus indicate that GM distribution and regional volumes in GD adolescents are largely in accordance with their respective natal sex. However, there are subtle deviations from the natal sex in sexually dimorphic structures, which can represent signs of a partial sex-atypical differentiation of the brain. [less ▲]

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See detailThe ciliogenic transcription factor Rfx3 is required for the formation of the thalamocortical tract by regulating patterning of prethalamus and ventral telencephalon.
Magnani, D; Morlé, L; Hasenpusch-Theil, K et al

in Human Molecular Genetics (2015)

Primary cilia are complex subcellular structures that play key roles during embryogenesis by controlling the cellular response to several signaling pathways. Defects in the function and/or structure of ... [more ▼]

Primary cilia are complex subcellular structures that play key roles during embryogenesis by controlling the cellular response to several signaling pathways. Defects in the function and/or structure of primary cilia underlie a large number of human syndromes collectively referred to as ciliopathies. Often, ciliopathies are associated with mental retardation (MR) and malformation of the corpus callosum. However, the possibility of defects in other forebrain axon tracts, which could contribute to the cognitive disorders of these patients, has not been explored. Here, we investigate the formation of the corticothalamic/thalamocortical tracts in mice mutant for Rfx3, which regulates the expression of many genes involved in ciliogenesis and cilia function. Using DiI axon tracing and immunohistochemistry experiments, we show that some Rfx3-/- corticothalamic axons abnormally migrate toward the pial surface of the ventral telencephalon (VT). Some thalamocortical axons (TCAs) also fail to leave the diencephalon or abnormally project toward the amygdala. Moreover, the Rfx3-/- VT displays heterotopias containing attractive guidance cues and expressing the guidance molecules Slit1 and Netrin1. Finally, the abnormal projection of TCAs toward the amygdala is also present in mice carrying a mutation in the Inpp5e gene, which is mutated in Joubert Syndrome and which controls cilia signaling and stability. The presence of identical thalamocortical malformations in two independent ciliary mutants indicates a novel role for primary cilia in the formation of the corticothalamic/thalamocortical tracts by establishing the correct cellular environment necessary for its development. [less ▲]

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See detailNew palaeobotanical data from the Lower Devonian of Mezquita de Loscos (Teruel Province, Spain)
Cascales - Miñana, Borja ULg; Rial, Gonzalo; Xue, Jinzhuang et al

in Historical Biology (2015), 27(3-4), 299307

Recent fieldwork has uncovered three new localities from the Lower Devonian of Mezquita de Loscos (Teruel Province, Spain) with further plant mega-fossils and the first record of micro-fossils. Such plant ... [more ▼]

Recent fieldwork has uncovered three new localities from the Lower Devonian of Mezquita de Loscos (Teruel Province, Spain) with further plant mega-fossils and the first record of micro-fossils. Such plant remains have been interpreted as belonging to a basal euphyllophyte, Taeniocrada-like stems, Hostinella genus and paired sporangia. Fourteen spore taxa were recovered, including Ambitisporites, Aneurospora, Brochotriletes, Chelinospora, Emphanisporites, Gneudnaspora and Retusotriletres, among others. New evidence confirms a Lochkovian age for this outcrop and suggests that the plant diversity was more complex than originally documented. © 2014 © 2014 Taylor & Francis. [less ▲]

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See detailWithdrawal of Immunomodulators After Co-treatment Does Not Reduce Trough Level of Infliximab in Patients With Crohn's Disease.
Drobne, David; Bossuyt, Peter; Breynaert, Christine et al

in Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association (2015), 13(3), 514-5214

BACKGROUND & AIMS: The addition of immunomodulators increases the efficacy of maintenance therapy with infliximab for up to 1 year in patients with Crohn's disease who have not been previously treated ... [more ▼]

BACKGROUND & AIMS: The addition of immunomodulators increases the efficacy of maintenance therapy with infliximab for up to 1 year in patients with Crohn's disease who have not been previously treated with immunomodulators. However, there are questions about the effect of withdrawing immunomodulator therapy from these patients. We studied the effects of treatment with infliximab and immunomodulators (co-treatment) and then immunomodulator withdrawal on long-term outcomes of patients, as well as trough levels of infliximab and formation of anti-infliximab antibodies (ATI). METHODS: In a retrospective study with the median follow-up period of 34 months (interquartile range, 19-58 months), we analyzed data from 223 patients treated for Crohn's disease between May 1999 and December 2010 at the University Hospitals, Leuven, Belgium (65 received infliximab monotherapy, 158 received infliximab and an immunomodulator). Trough levels of infliximab and levels of ATI were measured in blood samples collected from 117 patients throughout co-treatment, as well as the time of immunomodulator withdrawal and after withdrawal. RESULTS: Patients receiving co-treatment had higher trough levels of infliximab (adjusted mean increase, 1.44-fold) than those receiving infliximab monotherapy (95% confidence interval [CI], 1.07-1.92; P = .02). A smaller percentage of patients receiving co-treatment developed ATI (35 of 158, 22%) than those receiving infliximab monotherapy (25 of 65, 38%; P = .01). Among co-treated patients, levels of infliximab remained stable after immunomodulators were withdrawn (before: 3.2 mug/mL; 95% CI, 1.6-5.8 mug/mL and after: 3.7 mug/mL; 95% CI, 1.3-6.3 mug/mL; P = .70). After withdrawal of immunomodulators, 45 of 117 patients (38%) required increasing doses of infliximab, and 21 of 117 (18%) discontinued infliximab. At the time of immunomodulator withdrawal, trough levels of infliximab and C-reactive protein were most strongly associated with response to infliximab thereafter. CONCLUSIONS: In a retrospective analysis, we confirmed that withdrawal of immunomodulators after at least 6 months (median, 13 months) of co-treatment with infliximab does not reduce the trough levels of infliximab in patients with Crohn's disease. Detectable trough levels of infliximab at the time of immunomodulator withdrawal are associated with long-term response. [less ▲]

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See detailShort-term Effect of Infliximab Is Reflected in the Clot Lysis Profile of Patients with Inflammatory Bowel Disease: A Prospective Study.
Bollen, Lize; Vande Casteele, Niels; Peeters, Miet et al

in Inflammatory bowel diseases (2015), 21(3), 570-8

BACKGROUND: Inflammatory bowel disease (IBD) is recognized as an independent risk factor for thrombosis. First, we investigate whether the concentration of fibrinolysis inhibitors is increased in patients ... [more ▼]

BACKGROUND: Inflammatory bowel disease (IBD) is recognized as an independent risk factor for thrombosis. First, we investigate whether the concentration of fibrinolysis inhibitors is increased in patients with IBD. Second, we investigate the effect of infliximab induction therapy on the hemostatic profile. METHODS: This prospective study included 103 patients with IBD starting infliximab therapy and 113 healthy controls. Plasma was collected before the first infliximab infusion (wk 0) and after induction therapy (wk 14). Patients not showing a clinical response on induction were considered as primary nonresponders. Fibrinolysis inhibitors were measured by enzyme-linked immunosorbent assay. Using a clot lysis assay, the area under the curve (global marker for coagulation/fibrinolysis), 50% clot lysis time (marker for fibrinolytic capacity), and amplitude (indicator for clot formation) were determined. RESULTS: Patients with IBD selected for infliximab treatment have higher area under the curve (median 29 [interquartile range, 20-38]) and amplitude (0.4 [0.3-0.5]) compared with healthy controls (18 [13-24] and 0.3 [0.2-0.3], respectively, P < 0.001). Primary nonresponders showed a decrease neither in inflammatory markers nor in hemostatic parameters, whereas in primary responders, a decrease in inflammatory markers was associated with a decrease in both area under the curve (29 [20-38] (wk 0) to 20 [14-28] (wk 14), P < 0.001) and amplitude (0.4 [0.3-0.5] (wk 0) to 0.3 [0.3-0.4] (wk 14), P < 0.001). CONCLUSIONS: This is the first prospective study demonstrating that the clot lysis profile differs between patients with IBD and healthy individuals. On infliximab induction treatment, this clot lysis profile normalizes in responders suggesting that infliximab treatment is advisable for patients with IBD with an activated hemostatic profile. [less ▲]

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See detailFilter-free exhaustive odds ratio-based genome-wide interaction approach pinpoints evidence for interaction in the HLA region in psoriasis.
Grange, Laura; Bureau, Jean-Francois; Nikolayeva, Iryna et al

in BMC genetics (2015), 16(1), 11

BackgroundDeciphering the genetic architecture of complex traits is still a major challenge for human genetics. In most cases, genome-wide association studies have only partially explained the ... [more ▼]

BackgroundDeciphering the genetic architecture of complex traits is still a major challenge for human genetics. In most cases, genome-wide association studies have only partially explained the heritability of traits and diseases. Epistasis, one potentially important cause of this missing heritability, is difficult to explore at the genome-wide level. Here, we develop and assess a tool based on interactive odds ratios (IOR), Fast Odds Ratio-based sCan for Epistasis (FORCE), as a novel approach for exhaustive genome-wide epistasis search. IOR is the ratio between the multiplicative term of the odds ratio (OR) of having each variant over the OR of having both of them. By definition, an IOR that significantly deviates from 1 suggests the occurrence of an interaction (epistasis). As the IOR is fast to calculate, we used the IOR to rank and select pairs of interacting polymorphisms for P value estimation, which is more time consuming.ResultsFORCE displayed power and accuracy similar to existing parametric and non-parametric methods, and is fast enough to complete a filter-free genome-wide epistasis search in a few days on a standard computer. Analysis of psoriasis data uncovered novel epistatic interactions in the HLA region, corroborating the known major and complex role of the HLA region in psoriasis susceptibility.ConclusionsOur systematic study revealed the ability of FORCE to uncover novel interactions, highlighted the importance of exhaustiveness, as well as its specificity for certain types of interactions that were not detected by existing approaches. We therefore believe that FORCE is a valuable new tool for decoding the genetic basis of complex diseases. [less ▲]

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See detailLes vers à soie sauvages à Madagascar : Enjeux écologiques et socio-économiques
Verheggen, François ULg; Haubruge, Eric ULg; Bogaert, Jan ULg

in Entomologie Faunistique = Faunistic Entomology (2015), 68

We here introduce the book « The Malagasy silk moths: ecological and socio-economic challenges » published in 2013 by the Presses agronomiques de Gembloux (Belgium). This book reflects the achievements ... [more ▼]

We here introduce the book « The Malagasy silk moths: ecological and socio-economic challenges » published in 2013 by the Presses agronomiques de Gembloux (Belgium). This book reflects the achievements and scientific activities of the project "Sustainable Management and valorisation of the endemic silkworm Borocera cajani in forest areas in the Antananarivo region" funded by Commission universitaire pour le Développement (CUD - CIUF). [less ▲]

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See detailUsing zero-inlated models to predict the relative distribution and abundance of roe deer over very large spatial scales
Bouyer, Yaëlle ULg; Rigot, Thibaud; Panzacchi, Manuela et al

in Annales Zoologici Fennici (2015), 52

In Norway, recovering populations of large carnivores commonly prey on roe deer (Capreolus capreolus). Understanding predator habitat use and ecology requires fine-scaled information on prey distribution ... [more ▼]

In Norway, recovering populations of large carnivores commonly prey on roe deer (Capreolus capreolus). Understanding predator habitat use and ecology requires fine-scaled information on prey distribution and abundance. However, the massive spatial scales at which large carnivores use the landscape presents many practical and statistical challenges for developing functional prey distribution models. Pellet-count data from >1000 km of transects gathered across southeastern Norway from 2005 to 2011 were used to derive a map of relative prey abundance for roe deer. These data were modeled using zero-inflated hurdle models using both environmental and anthropogenic variables. Snow depth and agricultural fields were the most significant variables in explaining both presence and abundance. Internal k-cross validation of the model showed medium accuracy (Spearman r = 0.35), whereas external evaluation carried out on the basis of independently collected snow-tracking data (Spearman r = 0.37) and hunting statistics (Spearman r = 0.88) showed high accuracy. The map generated can facilitate both the study of broad scale processes linking predators and prey as well as roe deer management in southeastern Norway. [less ▲]

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See detailDoes sector-specific experience matter? The case of European higher education ministers
Lefebvre, Mathieu ULg; Jacqmin, Julien

E-print/Working paper (2015)

This paper looks at the relationship between higher education ministers and the performance of the sector that they govern. Using an original panel dataset with the characteristics of European higher ... [more ▼]

This paper looks at the relationship between higher education ministers and the performance of the sector that they govern. Using an original panel dataset with the characteristics of European higher education ministers, we find that having a past experience in the sector leads to a higher level of performance, as measured by ranking data. Making a parallel with the literature about the impact of education on the educated, we discuss potential explanations behind the impact of this on-the-job learning experience. As we find that this characteristic has no impact on the spendings of the sector, we argue that this academic experience makes them more prone to introduce adequate reforms. Furthermore, we find that this result is driven by ministers with both this sector-specific and an electoral experience, the latter measured by a succesful election at the regional or national level. This tends to show that political credibility should not be overshadowed by the importance of the sector-specific experience of ministers. [less ▲]

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See detailAn engine for global plant diversity: highest evolutionary turnover and emigration in the American tropics
Antonelli, Alexandre; Zizka, Alexander; Silvestro, Daniele et al

in Frontiers in Genetics (2015), 6

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See detailExploring the major depletions of conodont diversity during the Triassic
Martínez-Pérez, Carlos; Cascales - Miñana, Borja ULg; Plasencia, Pablo et al

in Historical Biology (2015), 27(5), 503-507

In this paper, we show that the Triassic fossil record reflects just two great depletions of conodont diversity before the Rhaetian, which occurred in the Smithian (Olenekian, Early Triassic) and in the ... [more ▼]

In this paper, we show that the Triassic fossil record reflects just two great depletions of conodont diversity before the Rhaetian, which occurred in the Smithian (Olenekian, Early Triassic) and in the Julian (Carnian, Late Triassic). By exploring this context, our results highlighted that they respond to different origination-extinction dynamics. Thus, while the Smithian diversity depletion can be interpreted as a consequence of elevated extinction, the Julian diversity depletion was triggered by fluctuations in origination regime. This evidence suggests that, despite the role of extinction on diversity losses, conodonts suffered crucial changes on the origination regimes during the Late Triassic which triggered these events. Notwithstanding, our results indicate that the end-Triassic diversity depletion of conodonts was produced by background extinction levels in a context of lower origination. This suggests that several biological factors, rather than a unique, environmental and/or cyclic cause, could have influenced the evolutionary history of conodonts during the Triassic. © 2014 © 2014 Taylor & Francis. [less ▲]

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See detailDiversity patterns of the vascular plant group Zosterophyllopsida in relation to Devonian palaeogeography
Cascales - Miñana, Borja ULg; Meyer-Berthaud, Brigitte

in Palaeogeography, Palaeoclimatology, Palaeoecology (2015), 423

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See detailWelcome to papers from the Second International Meeting of Agora Paleobotanica
Cascales - Miñana, Borja ULg; Diez, José B.

in Historical Biology (2015), 27(3–4), 291293

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