00399nam a2200145 a 450000500170000002000180001708200160003510000190005111000210007024500360009126000350012730000210016250000500018370000200023320251203110041.0  a9781566703093  a577.27bMUL  aCech, Joseph J  aCrosby, Donald G  aMultiple stresses in ecosystems  aBostonbLewis Publishersc1998  a202p.c22cm.bHB  aincludes bibliographical references and index  aWilson, Barry W