000 00247nam a2200121Ia 4500
100 _aSeshagini . N
942 _cBK
245 _aPollution
260 _aNew Delhi
_bNBT India
_c1997
082 _aJ363.73
_bSes
300 _a64
546 _aEnglish
999 _c334487
_d334487
041 _aeng