00626nam a22002177a 4500 KE-MeUCS 20150525090320.0 150525b xxu||||| |||| 00| 0 eng d 0030946662 KE-MeUCS KE-MeUCS QB631.A2.c1991 Abell,George O. Exploration of the universe: 1993 version George O.Abell,David Morrison and Sidney C.Wolff 6th ed. Orlando,Florida Saunders College publ. c1991 xiv,681p. The universe Astronomy Morrison,David et al lcc BK SK 77295 77295