000 00267nam a2200097Ia 4500
008 160710s1957 xx 000 0 und d
100 _aCHEMICAL ENGINEERING
245 _aCHEMICAL ENGINEERING,APR.-MAY NO.4-5
260 _bMC GRAW HILL PUBLISHING
_c1957
942 _2ddc
_cB
999 _c40142
_d40142