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Dyfyniad APA
Estados Unidos Geological Survey. (1902). Reclamation projects, gaging sations and river surveys. U. S. Geological Survey.
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Dyfyniad Arddull Chicago
Estados Unidos Geological Survey. Reclamation Projects, Gaging Sations and River Surveys. U. S. Geological Survey, 1902.
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Dyfyniad MLA
Estados Unidos Geological Survey. Reclamation Projects, Gaging Sations and River Surveys. U. S. Geological Survey, 1902.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.