000 00262pam a2200109a 44500
082 _a520
_bB17I4
100 _aBaker, Robert H.
245 1 _aAN INTRODUCTION TO ASTRONOMY
260 _a
_bD. Van Nostrand Company, Inc.
_c1961
964 _gCIRC
997 _a7656 C
999 _c412173
_d412173