Ericson, David B. The ever-changing sea / David B. Ericson and Goesta Wollin; illustrations by Ingrid Niccoll. - London : MacGibbon & Kee, c1967 [Published 1968]. - xiii, 354, xii p. : illus. ; 24 cm. Includes index. Bibliography: p. 351-354. ISBN: Subjects--Topical Terms: Oceanography--Popular works. Dewey Class. No.: 551.46 / ERE 1968