Jordanus de Nemore, De elementis arithmetice artis : a medieval treatise on number theory / H.L.L. Busard.

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Jordanus, Nemorarius, active 13th century. De elementis arithmetice artis. English.

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Jordanus de Nemore, De elementis arithmetice artis : a medieval treatise on number theory / H.L.L. Busard.