The young specialist looks at land and freshwater Molluscs / Horst Janus, translated edited and adapted illustreted by walter Sollner and Cynthia O'Brien Janus, Horst Sollner, walter O'Brien, Cynthia Mollusks. Mollusks -- Great Britain. 594 JAY Includes index. London : Burke, c1965. c1965. 1965 Text 180 p. : eng