000 00296nam a22001337a 4500
020 _a978121927642
082 _a651/AST
100 _aAsthana T.S.
245 _aA Text Book of Enviormental Studies
260 _aDelhi
_bS.Chand.Co
_c2006
300 _a397
650 _aEnviorment
942 _cBK
999 _c37328
_d37328