000			00317nam a2200145Ia 4500
008			240201s1973 xx 000 0 eng d
020			_a0171440110
082			_a520 NIC
100			_aNICOLSON, LAIN
245		0	_aSIMPLE ASTRONOMY
260			_bNELSON _c1973
300			_a63
650			_aSCIENCE
942			_2ddc _cBK
999			_c5580 _d5580