000 00414 a2200145 4500
020 _a8170248906
082 _a577.2703
_bCHI
090 _c16600
_d25123
100 _aChitkara, M.G.
245 _aEncyclopaedia of ecology,environment and pollution
_bthe water (prevention and control of pollution) act,1974
260 _aNew Delhi
_bAPH
_c1998
_g1998
300 _axv,343p.
_c25cm
650 _aEcology
942 _cPR
999 _c44584
_d44584