Dangos 1 - 1 canlyniadau o 1 ar gyfer chwilio 'Trautschold, Reginald', amser ymholiad: 0.01e Mireinio'r Canlyniadau
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    Gear design and production rules and working formulas gan Trautschold, Reginald

    Cyhoeddwyd 1955
    Llyfr

    Gear design and production rules and working formulas

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