The Spectra of the Night Sky and the AuroraSwings, Polydore ; in Kuiper, Gerard Peter (Ed.) The atmospheres of the earth and planets: papers presented at the Fiftieth Anniversary Symposium of the Yerkes Observatory, September, 1947 (1949) Description of the night-sky and twilight spectra Description of auroral spectra Interpretation of the observations Conclusions Detailed reference viewed: 5 (0 ULg) Comparison of the Na and N2+ flashes at Twilight and Dawn.Swings, Polydore ; in Astrophysical Journal (1949), 109 Detailed reference viewed: 7 (0 ULg) The infrared spectra of the Planetary Nebulae BD+30°3639, NGC 6572, and NGC 6543Swings, Polydore ; in Publications of the Astronomical Society of the Pacific [=PASP] (1949), 61 Detailed reference viewed: 5 (2 ULg) Plaidoyer pour un humanisme scientifiqueFredericq, Henri ![]() Speech (1949) Detailed reference viewed: 9 (3 ULg) |
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