00356    a2200133   4500020001500000082001800015100001600033245002100049260004900070300002000119650003200139650001200171650003900183  a8121918758  a577.2709bMIS  aMishra, M.P  aOur environment   aNew DelhibS.Chand & Company Ltdc2000g2000  a[vi],80p.c24cm  aEffects of human on ecology  aEcology  aSpecific factors affecting ecology