000 00293nam a2200133Ia 4500
008 160122s9999 xx 000 0 und d
041 _aEnglish
100 _aSharma
245 _aWater Pollution
250 _a1st
260 _bMeerut:krishna pub
_c1998
300 _a312p.
650 _aChemistry
999 _c139
_d139