000			00564nam a2200145Ia 4500
008			140208s9999 xx 000 0 und d
020			_a9780070454910
044			_aU.S.A.
080			_a505 M178
100			_aParker, Sybil P., ed.
245			_aMc Graw-Hill year book of science and technology 1990 : comprehensive coverage of recent events and research as compiled by the staff of the Mc-Graw Hill encyclopedia of science and technology _cedited by Sybil P. Parker
260			_bMcGraw-Hill Book _aNew York _c1990
300			_a382 p.; 29cm.
942			_2udc _cREF
999			_c27565 _d27565