00314    a2200109   4500020001500000082001800015100001900033245008900052260003100141300002000172650001200192  a8170248825  a577.2703bCHI  aChitkara, M.G.  aEncyclopaedia of ecology,environment and pollutionbenvironmental concerns and peace  aNew DelhibAPHc1998g1998  axvi,215p.c25cm  aEcology