000 00300nam a2200121Ia 4500
001 00668
008 190706s9999 xx 000 0 und d
082 _a603 M147
245 0 _aMcGRAW-HILL ENCYCLOPEDIA OF SCIENCE AND TECHNOLOGY
250 _a15
260 _bMC GRAW, NEW YORK
_c1977
942 _cREF
_2DDC
999 _c9911
_d9911