000 00282nam a2200109Ia 4500
008 220201s1960 xx 000 0 eng d
100 _aMc Graw Hill
245 0 _aEncyclopedia of science & technology GAB/HYS
260 _bMc Graw Hill Corp.Inc
_c1960
300 _a600
942 _2ddc
999 _c70525
_d70525