000 00258nam a2200097Ia 4500
008 160710s1957 xx 000 0 und d
100 _aCHEMICAL ENGINEERING
245 _aCHEMICAL ENGINEERING,. MID., NOV NO.18
260 _bMC GRAW HILL
_c1957
942 _2ddc
_cB
999 _c40145
_d40145