000 00332nam a2200145Ia 4500
008 170101s1972 xx 000 0 und d
082 _a540 P69C
100 _aPORTERFIELD, William W
245 0 _aConcepts of chemistry
260 _bN.Y
_c1972
300 _a948p
650 _aCHEMISTRY
653 _aCHEMISTRY
942 _2ddc
_cB
999 _c47752
_d47752