Gwinner, M. P. Geologie der Alpen.
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Dyfyniad Arddull Chicago
Gwinner, Manfred Paul. Geologie Der Alpen.
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Dyfyniad MLA
Gwinner, Manfred Paul. Geologie Der Alpen.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.