000 00308nam a2200157Ia 4500
082 _a
100 _aDave, Deeksha
526 _dTB
526 _aPG
366 _f20
942 _cBK
245 _aTextbook of environmental studies
260 _aDelhi
_bCengage
_c2012
300 _axv,369
546 _aE
999 _c78781
_d78781