Keddy, Paul A., Wetland ecology : principles and conservation / Paul A. Keddy. - 2nd ed. - New York : Cambridge University Press, 2000. - xvi, 497 p. : ill. (some col.), maps (some col.) ; 26 cm. Includes index and references ISBN: 9780521519403 (hardback) 9780521739672 (pbk.) Subjects--Topical Terms: Wetland ecology.Wetland,conservation. LC Class. No.: QH541.5 .M3K44 2000