000 00356nam a2200145Ia 4500
008 130629s9999 xx 000 0 und d
082 _a541 SHA-A
100 _aSharma,B.K;Kaur,H
245 _aAn Introduction To Enviornmental Chemistry
260 _bGoel
_c1997
_aMeerut
300 _a512
650 _aChemistry
650 _aGeneralities
942 _cBK
999 _c23487
_d23487