000 00330nam a2200133Ia 4500
008 191201s2011 xx 000 0 und d
100 _aDESWAL,S
245 0 _aBasic Course in Environmental Studies
250 _aRep
260 _c2011
_bDhanpat Rai Pub (P) Ltd
_aN. Delhi
300 _aMISC
650 _aAPPLIED
942 _2ddc
_cBB
999 _c7451
_d7451