000 00255nam a2200097Ia 4500
008 160710s1956 xx 000 0 und d
100 _aCHEMICAL WEEK
245 _aCHEMICAL WEEK, NOV - DEC NO.18,20,21,23,29
260 _bMC GRAW HILL
_c1956
942 _2ddc
_cB
999 _c40235
_d40235