Thorne, Jim. The underwater world a survey of oceanography today. - New York Crowell [1969] - viii, 160 p. illus., ports. 22 cm. 921004 LCCN: 69018673 Subjects--Topical Terms: Oceanography--Popular works. LC Class. No.: GC21 / .T45 Dewey Class. No.: 551.4/6