000 00256nam a22001217a 4500
999 _c410
_d410
020 _a9788176485326
082 _a333.7015
100 _aProf.P.R.Trivedi
245 _aEcology & Environment
260 _aNew Delhi
_bAPH
_c2010
300 _a202
942 _cBK
_02