000 00537nam a2200157Ia 45e0
008 180501s2010 xx 000 0 und d
100 _aDR.B.B.CHAWDHARY
245 0 _aENVIORNMENTAL STUDIES
250 _a1
260 _bDELHI/SH.MAHAVIR BOOK DEPOT
_c2010
300 _a232
650 _aCOM
942 _2ddc
_cBK
999 _c8526
_d8526