00273nam a2200109Ia 4500100001700000654002000017245005700037260003400094082001500128300000800143546001200151  aHawking S.W   aA brief history  aA brief history of time from big bang to black holes  bBantam  booksaNew Yorkc1988  a523.1bHAW  a211  aENGLISH