000 00331nam a2200145Ia 4500
100 _aSubramanian,V.
020 _a81-7319-410-6
365 _b260
942 _cBK
654 _a
245 _aText book in Environmental science
260 _aNew Delhi
_bNarosa Publishing House
_c2002
082 _a574.5
300 _bPb
_avi,238
999 _c423587
_d423587
041 _aeng