000			003700000a22001450004500
245			_aMcGraw - Hill yearbook of science and technology 1978
260			_aNew York _bMcGraw - Hill _c1979
300			_a444p. : ill.
020			_a0070453497
080			_a5/6(058) _bM3
650			_aSCIENCE-YEARBOOKS
650			_aTECHNOLOGY-YEARBOOK
041			_aEN
942			_cBK
999			_c65275 _d65275