000 00285nam a2200133Ia 4500
008 210804s1990||||xx |||||||||||||| ||und||
041 _aeng
100 _aKudesia V P
245 0 _aWater pollution
250 _a3rd
260 _aMeerut
_bPragati
_c1990
300 _a407
942 _cBK
999 _c11663
_d11663