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June 12, 1930: Revision history

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12 May 2015

  • curprev 17:3817:38, 12 May 2015 Tgaitskell talk contribs 323 bytes +323 Created page with "Marine biologist, William Beebe and Frederick Otis Barton, diver and submersible inventor, conduct a deep sea dive in a submersible Bathysphere of Barton's design off the coast o..."