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2by Great Britain. Hydrographic Dept.;Subjects: “...Greenland Sea -- Navigation...”
Published 1931
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3
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4by Maury, Matthew Fontaine, 1806-1873“... and Instruments (which later became the Naval Observatory). Maury then obtained massive amounts of navigational...”
Published 1849
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5by United States. Navy Dept. Bureau of Equipment“... navigational record and raised doubts about whether he and Henson ever ......”
Published 1903
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