000 00294nam a2200121Ia 4500
008 180721s9999 xx 000 0 und d
100 _aSINGH (A K)
245 0 _aAir water and soil pollution
260 _b"Kalyani publishers, New Delhi"
260 _c2007
365 _b295.00
942 _cBK
999 _c157340
_d157340