Cofnodi Dyfyniadau
Dyfyniad APA
Wright A. C. S. (1958). Provisional soil map. Survey Department.
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Dyfyniad Arddull Chicago
Wright A. C. S. Provisional Soil Map. Survey Department, 1958.
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Dyfyniad MLA
Wright A. C. S. Provisional Soil Map. Survey Department, 1958.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.