000 00350nam a2200145 4500
999 _c5213
_d5213
020 _a9788131517604 (pbk)
082 _a628DAV
100 _aDave D
245 _aTextbook of Environmental Studies
260 _aNew Delhi:
_bCengage Learning,
_c2012.
300 _a369p .;
650 _aEnvironmental Sciences
650 _aHuman Ecology
942 _cBK