000 nam a22 7a 4500
999 _c4564
_d4564
008 181112b xxu||||| |||| 00| 0 eng d
020 _a9788190820875
082 _a344.046CHO
100 _aChowdhary, Dr. B.B.
245 _aEnvioenmental Studies
250 _a1 ed. Rep
260 _aNew Dehli
_bShree Mahavir Book Depot
_c2011-12
300 _a232p.
650 _aEnvioenmental Studies
942 _2ddc
_cBK