Into the Deep: A Memoir From the Man Who Found Titanic
by Robert D. Ballard Ph.D.
ISBN 13: 9781426220999
Format: Hardcover (336 pages) Publisher: National Geographic Published: 10 Jun 2021
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National Geographic Concise History of the World: An Illustrated Time Line
by Robert D. Ballard Ph.D.,Malcolm McConnell
ISBN 13: 9780792283645
Format: Hardcover (288 pages) Publisher: National Geographic Published: 24 Nov 2006