Friedrich, Hermann. Marine biology : an introduction to its problems and results / Hermann Friedrich ; translated by Gwynne Vevers. - London : Sidgwick & Jackson, c 1969. - xii, 474 p. ; 22 cm. - Biology series. . Includes index. 318 318 ISBN: 283.35435.6 Subjects--Topical Terms: Marine biology. Dewey Class. No.: 597 / N548e