00338nam a22001097a 4500008004100000020001500041050002300056100002700079245004000106260004900146300003300195150930b        xxu||||| |||| 00| 0 eng d  a0787274909  aQH 541.5 .M33 2001  aMackie Gerald L.d2001  aApplied Aquatic  Ecosystem Concepts  aCanadabKendal/Hunt Publishing Companyc2001  axxv, 744:illbincludes index