00457nam a2200169 a 450000500170000008200130001710000160003024500260004626000510007230000170012369000120014070000170015296400250016999700180019499900170021295200580022920251203091603.0  a577bPUT  aPutman, RJ.  aPrinciples of ecology  aBerkeleybUniversity of California Pressc1984  a388p, 22 cm.  aEcology  aWratten, SD.  bEngc100de010fg_  a67513 LIBSC C  c45443d45443  00104070aPUbPUd1998-04-08l0o577 PUTp67513yBK