Walter Baade Autor Donald E. Osterbrock 14 oct 2001 Hardback Preț: 488.31 lei 634.18 lei 43-57 zile -23%
Origins and Extinctions Editat de Donald E. Osterbrock et al. 29 ian 1992 Paperback Preț: 177.08 lei 43-57 zile
Yerkes Observatory, 1892-1950: The Birth, Near Death, and Resurrection of a Scientific Research Institution Autor Donald E. Osterbrock 15 mai 1999 Paperback Preț: 156.24 lei 22-36 zile
James E. Keeler Autor Donald E. Osterbrock 19 iul 2002 Paperback Preț: 556.71 lei 625.52 lei 43-57 zile -11%