000 00241nam a2200097Ia 4500
008 160710s1948 xx 000 0 und d
100 _aMEGRAW-HILL PUB CO
245 _aCHEMICAL ENGINEERING JULY TO SEP 1948
260 _c1948
942 _2ddc
_cB
999 _c18638
_d18638