000			00299pam a2200133a 44500
082			_a523 _bB17a7
100			_aBaker,, Robert H.
245	1		_aAstronomy
250			_a7th
260			_aToronto _bD. Van Nostrand Company, Inc _c1930
300			_aviii,547p.
964			_gCIRC
997			_a38911 C
999			_c449360 _d449360