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Dyfyniad APA
Lee Willis T. (1905). Geologic map of a portion of Salt river valley, Arizona. U. S. Geological Survey.
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Dyfyniad Arddull Chicago
Lee Willis T. Geologic Map of a Portion of Salt River Valley, Arizona. U. S. Geological Survey, 1905.
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Dyfyniad MLA
Lee Willis T. Geologic Map of a Portion of Salt River Valley, Arizona. U. S. Geological Survey, 1905.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.