Nostrand, J. v. (1896). The formal Concept for the student only.
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Dyfyniad Arddull Chicago
Nostrand, J.J. van. The Formal Concept for the Student Only. Chicago, 1896.
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Dyfyniad MLA
Nostrand, J.J. van. The Formal Concept for the Student Only. 1896.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.