00421nam a2200157 a 450000500170000002000150001708200130003210000200004524500280006525000120009326000460010530000220015150000500017363000120022363000280023520251203090739.0  a0721669417  a577bODU  aOdum, Eugene P.  aFundamentals of ecology  a3rd ed.  aPhiladelphiabW.B. Saunders Companyc1971  axiv,574p.c24 cm.  aincludes bibliographical references and index  aEcology  aFundamentals of ecology