000 00375 a2200145 4500
020 _a8170248817
082 _a577.2703
_bCHI
090 _c16619
_d25150
100 _aChitkara, M.G.
245 _aEncyclopaedia of ecology,environment and pollution
_bthe mother earth
260 _aNew Delhi
_bAPH
_c1998
_g1998
300 _axii,381p.
_c25cm
650 _aEcology
942 _cPR
999 _c44602
_d44602