Morton, John Edward. Molluscs/ by J. E. Morton. - 4th (revised) ed. - London, : Hutchinson, , 1967. - 244 p. illus., tables , diagrs. - Hutchinson university library: Biological sciences . Bibliography: p. [226]-235. Subjects--Topical Terms: Mollusks. Dewey Class. No.: 594.4 MOR/M