Dangos 1 - 1 canlyniadau o 1 ar gyfer chwilio 'Lobachevski, Nicholas, 1793-1856', amser ymholiad: 0.01e Mireinio'r Canlyniadau
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    Geometrical researches on the thoery of parallels. gan Lobachevski, Nicholas, 1793-1856

    Cyhoeddwyd 1914
    Llyfr

    Geometrical researches on the thoery of parallels.

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