000 00301nam a2200133Ia 4500
020 _a9788131507636
082 _a574.509 DEV/E
100 _aDeve, Deeksha
245 0 _aTextbook of Environment & Ecology
250 _a3rd Ed.
260 _bScientific Publishers
_c2008
300 _a23
942 _cBK
999 _c37498
_d37498