000 003120000a22001330004500
245 _aMcGraw Hill year book of science and technology 1968
260 _aN ew york
_bMcGraw Hill
_c1962
300 _a468p.
080 _a6(03)
_bM3
650 _aSCIENCE
650 _aTECHNOLOGY
041 _aEN
942 _cBK
999 _c93731
_d93731