000 00306nam a2200121Ia 4500
008 170101s1990 xx 000 0 und d
082 _a628.168 TRI
100 _aTripathi A.K.
245 0 _aWater Pollution
260 _aNew Delhi
_bAshish Publishing House
_c1990
300 _a326 p.
942 _2ddc
_cEG
999 _c1920916
_d1920916