000 00329nam a2200145Ia 4500
008 220926s9999 xx 000 0 und d
100 _aPorterfieod
245 0 _aConcepts Chemistry
250 _a1st Ed
260 _aNew York
260 _bW.W.Noton & Company
260 _c1972
650 _aConcepts Chemistry
942 _cREF
999 _c5761
_d5761