00527nam a22001937a 4500003000400000005001700004008004100021020001500062040002900077050002100106100001900127245004400146260004800190300001900238650001400257650001700271700002300288700002200311OSt20260616150253.0260616b        |||||||| |||| 00| 0 eng d  a0030316979  cChuka University Library  aQB 45b.Z45 1992  aZeilik Michael  aIntroductory Astronomy And Astrophysics  aNew YorkbSaunders College Publishingc1992  aVarious Paging  aAstronomy  aAstrophysics  aStephen A. Gregory  aElske V. P. Smith