000 00417nam a2200169Ia 4500
008 180424s9999 xx 000 0 und d
020 _a817381404X
084 _a574.5 S65
100 _a"Santra, Sc"
245 0 _aEnvironmental Science
250 _a\\201000ENGGPCX
260 _aNew Central Book Agency
260 _b2010
260 _cCalcutta
500 _aincludes index and biblioraphy
942 _cBK
999 _c92903
_d92903