000 00336nam a2200157Ia 4500
008 190201s9999 xx 000 0 und d
020 _a812241009x
082 _a628
082 _b168 GO
100 _aGoel P.K.
245 0 _aWater Pollution Causes E
260 _aNew Delhi
260 _bNew Age
260 _c1997
300 _a269
999 _c37047
_d37047