000 00277nam a2200109Ia 4500
008 200701s2010 xx 000 0 eng d
100 _aS DESWAL
245 2 _aa basic course in environmental studies
260 _bDHANPAT RAI PUBLISHERS
_c2010
300 _a7.36
942 _2ddc
_cGE
999 _c5039
_d5039