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pl23_cgs00110.jpg

Coast Survey chart showing density of soundings from original survey used to to construct nautical chart

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Coast Survey chart showing density of soundings from original survey used to to construct nautical chart. Comparing survey of Ponce Harbor, PuertoRico to published chart of same. In: Nautical Charts by George Rockwell Putnam, 1908. 162 pp.

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1908

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