000 00272nam a2200109Ia 4500
008 220201s2005 xx 000 0 eng d
100 _aDESWAL, S.
245 0 _aBASIC COURSE IN ENVIRONMENTAL STUDIES
260 _aDELHI
_bDHANPAT RAI
_c2005
300 _a8chap
942 _2ddc
999 _c68584
_d68584