Bappu, M.K.V. Wolf-Rayet and High-Temerature Stars - Dordrecht: Reidel Publishing Company 1973 - Proceedings of the 49th. Symposium of the International Astronomical Union held in Buenos Aires, on Augustu 9-14, 1971 ISBN: 90-277-0246-2 Subjects--Topical Terms: Astronomía