Marx, Robert F. & Jennifer books & textbook
The Search for Sunken Treasure: Exploring the World's Great Shipwrecks
Key Porter Books /1993T Hardcover / 192 Pages
isbn-10: 1550134183 / isbn-13: 9781550134186
The World's Richest Wrecks: A Wreck Diver's Guide to Gold and Silver Treasures of the Seas
Marx, Robert F. Marx, Jennifer
Ram Publishing /2009-04-02 Paperback / 420 Pages
isbn-10: 0981899110 / isbn-13: 9780981899114
