Investigating the Universe: Papers presented to Zden?k Kopal on the occasion of his retirement, September 1981 Astrophysics and Space Science Library, nr. 91 Editat de F.D. Kahn et al. 30 sep 1981 Hardback Preț: 1206.48 lei 1471.31 lei 6-8 săpt. -18%
Wolf-Rayet and High-Temperature Stars International Astronomical Union Symposia, nr. 49 Editat de M.K.V. Bappu et al. 31 iul 1973 Paperback Preț: 381.68 lei 6-8 săpt.