00373    a2200133   4500020001500000082001600015100001400031245005000045260004000095300002000135650003300155650001200188650003900200  a8176251658  a577.27bKUM  akumar, P.  aBiological control of environmental pollution  aNew DilhibSarup & Sonsc2000g2000  a[v],364p.c22cm  aEffects of humans on ecology  aEcology  aSpecific factors affecting ecology