Frischauf, J. (1877). Elemente der Geometrie.
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Dyfyniad Arddull Chicago
Frischauf, Johann. Elemente Der Geometrie. Leipzig, 1877.
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Dyfyniad MLA
Frischauf, Johann. Elemente Der Geometrie. 1877.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.