000 00299nam a2200133Ia 4500
082 _a577.14
_bGUP
100 _aGupta, K.M.
245 _aEnvironment and Ecology
250 _a4th
260 _aNew Delhi
_bUmesh Publication
_c2009
300 _a385p
650 _aEnvironmental Science
650 _aMCA
999 _c4978
_d4978