Dangos 1 - 1 canlyniadau o 1 ar gyfer chwilio 'Aslam, Muhammad. 1931-', amser ymholiad: 0.01e Mireinio'r Canlyniadau
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    On ratio method of estimation in a heirarchical sample survey design [microform] gan Aslam, Muhammad. 1931-

    Cyhoeddwyd 1973
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    On ratio method of estimation in a heirarchical sample survey design [microform]

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