Authors(s)	Fretter, V. and A. Graham
Year	1981
Title	The prosobranch molluscs of Britain and Denmark. Part 6. Cerithiacea, Strombacea, Hipponicacea, Calyptraeacea, Lamellariacea, Cypraeacea, Naticacea, Tonnacea, Heteropoda. Jour. Moll. Stud. Suppl. 9, 82 pp.