pl23_ship3190.jpg
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Dr. Francis P. Shepard, the father of marine geology, discussing scientificfindings of the International Indian Ocean Expedition on board the Coast andGeodetic Survey Ship PIONEER at a press conference in Colombo, Ceylon. Lookingon were Dr. Robert Dietz, an early pioneer in plate tectonic theory, and Dr.Harris B. Stewart, Chief Oceanographer of the Coast and Geodetic Survey.