000			00348nam a2200145Ia 4500
008			170519s9999 xx 000 0 und d
041			_aEnglish
082			_a520/WIL C1
100			_aROBERT WHEELER WILLSON
245			_aLABORATORY ASTRONOMY
260			_bGINN AND COMPANY _aLONDON _c1905
300			_c189P
650			_aASTRONOMY
942			_cBK
999			_c60192 _d60192