000 00257nam a2200097Ia 4500
008 160710s1957 xx 000 0 und d
100 _aCHEMICAL WEEK
245 _aCHEMICAL WEEK, JAN ,FEB, MARH ,JULY 3,7,10,4
260 _bMC GRAW HILL
_c1957
942 _2ddc
_cB
999 _c40238
_d40238