000 00291nam a2200121Ia 4500
999 _c54081
_d54081
100 _aSurinder Deswal.
245 _aBasic Course in Environmental Studies
250 _a2
260 _c2010
_bDHANPAT RAI & CO.
_aDelhi
300 _axv+iv+8.2+viii
700 _aAnupama Deswal.
942 _cBB