000			00618 a2200193 4500
999			_c1754 _d1754
003			ISURa
008			160613b xxu||||| |||| 00| 0 eng d
020			_a0716605910
041			_aEnglish
082			_a500 _bSCI
245			_a1991 Science year _bthe world book annual Science supplement , a review of science and technology during the 1990 school year
260			_c1990 _aChicago _bWorld Book. inc. _g1990
300			_c25 cm. _a400 p.
650			_aYEAR BOOK 1991 _95250
650			_aSCIENCE AND TECHNOLOGY _96708
650			_aSCIENCE _913416
650			_aWORLD ANNUAL SCIENCE SUPPLEMENT _913417
942			_cPR _2ddc