FRETTER, Vera The prosobranch molluscs of Britain and Denmark / Vera Fretter and Alastair Graham and Elizabeth B. Andrews. -- [S.l.] : [s.n.], 1977-1986 - 6 v. -- (The Journal of Molluscan Studies. Supplement ; 3). Contiene : T.II. Trochaces -- T.V. Marine Littorinacea -- T.VI. Cerithiacea... T.VII. Heterogastropoda... -- T.VIII. Neogastropoda -- T.IX. Pyramidellacea. -- Reg. 5440-5445 Subjects--Topical Terms: MoluscosProsobranquios - DinamarcaProsobranquios - Gran Bretaņa Universal Decimal Class. No.: 594.3(410) ; 594.3(489)