Picton, Bernard. E. A field guide to the shallow-water echinoderms of the British Isles / Bernard E. Picton. - London : Immel Pub., 1993 1414. - 96 p. : ill. (some col.) ; 23 cm. At head of title: Marine Conservation Society. Includes bibliographical references and indexes. ISBN: 0907151884 Subjects--Topical Terms: Echinodermata--Identification.--Great BritainEchinoderms--Great Britain. Dewey Class. No.: 593.90941 / P B F