Nybakken, James Willard Marine biology : an ecological approach / James W. Nybakken. - 4th ed. - Menlo Park, Calif. : Benjamin Cummings, c1997. - xiii, 481p. : ill. (some col.), maps ; 26 cm. Includes bibliographical references and index. ISBN: 0673994511 Subjects--Topical Terms: Marine biology.Marine ecology.