00573nam a2200205 a 450000500170000002000150001708200130003210000160004524500320006126000510009330000230014469000120016769000170017969000280019669000260022496400160025099700180026699900170028495200660030120251203110048.0  a8170249724  a577bPER  aAgarwal,S.K  aPerspectives in environment  aNew DelhibA.P.H. Publishing Corporationc1998  axv,381p.c27cmbHB  aEcology  aBiodiversity  aPerspectives in ecology  aEnvironmental aspects  bcdefg_  a92819 LIBSC C  c76415d76415  00104070aPUbPUd1999-07-04g850.00l0o577 PERp92819yBK