Cofnodi Dyfyniadau
Dyfyniad APA
Avila Y Rojano Jose de & Humboldt Alexander von. (18). [Vulcões e Cordilheiras de parte da América Central e do Sul].
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Dyfyniad Arddull Chicago
Avila Y Rojano Jose de and Humboldt Alexander von. [Vulcões E Cordilheiras De Parte Da América Central E Do Sul]. 18.
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Dyfyniad MLA
Avila Y Rojano Jose de and Humboldt Alexander von. [Vulcões E Cordilheiras De Parte Da América Central E Do Sul]. 18.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.