00605nam a2200193 a 450000500170000002000150001708200130003210000150004524500430006026000480010330000210015150000500017269000240022269000290024696400350027599700180031099900170032895200660034520251203110048.0  a8176480193  a577bNAY  aNayar, K.R  aEcology and healthba systems approach  aNew DelhibAPH publishing corporationc1998  a210p.c22cm.bHB  aincludes bibliographical references and index  aEcology and Heralth  aEcology - health aspects  bENGLISHcd574.4091eBOOKfg_  a93246 LIBSC C  c76377d76377  00104070aPUbPUd1999-07-27g255.00l0o577 NAYp93246yBK