Undersea treasures. [electronic resource] . — [Washington, : National Geographic Society,, 1974]. — 199 p. : illus. 26 cm. Bibliography: p. 199. ISBN: 0870441477 9780870441479 LCCN: 74001563 Subjects--Topical Terms: Treasure troves.Underwater archaeology. LC Class. No.: G525 / .N33 1974 Dewey Class. No.: 910/.453