Eighteenth annual report of the United States Geological Survey to the Secretary of the Interior, 1896-1897: Part I - Director's report, including triangulation and spirit leveling (Q137479)

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Eighteenth Annual report of the United States Geological Survey to the Secretary of the Interior, 1896-1897: Part I; 1897; AR; 18; Walcott, Charles D.
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Eighteenth annual report of the United States Geological Survey to the Secretary of the Interior, 1896-1897: Part I - Director's report, including triangulation and spirit leveling
Eighteenth Annual report of the United States Geological Survey to the Secretary of the Interior, 1896-1897: Part I; 1897; AR; 18; Walcott, Charles D.

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