Cofnodi Dyfyniadau
Dyfyniad APA
(1897). Map showing condition and progress of astronomic location, primary triangulation, primary traverse and precise leveling for the year fiscal 1896-7. U. S. Geological Survey.
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Dyfyniad Arddull Chicago
Map Showing Condition and Progress of Astronomic Location, Primary Triangulation, Primary Traverse and Precise Leveling for the Year Fiscal 1896-7. U. S. Geological Survey, 1897.
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Dyfyniad MLA
Map Showing Condition and Progress of Astronomic Location, Primary Triangulation, Primary Traverse and Precise Leveling for the Year Fiscal 1896-7. U. S. Geological Survey, 1897.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.