Cushing, David The detection of fish / by David Cushing - Oxford : Pergamon Press, c1973 - xiii, 200 p. : ill. ; 26 cm. - International series of monographs in pure and applied biology. Division: zoology ; v. 52 . Includes bibliographical references and index ISBN: 0080171230 : PND 5.50 Subjects--Topical Terms: Echo sounding in fishing Dewey Class. No.: 639.2028