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  1. 1

    The selection of geometric design standards for rural roads in developing countries 著者: Robinson, R.

    出版事項 1981
    図書

    The selection of geometric design standards for rural roads in developing countries
  2. 2

    Optimum axle loads of commercial vehicles in developing countries 著者: Rolt, J.

    出版事項 1981
    図書

    Optimum axle loads of commercial vehicles in developing countries
  3. 3

    Surface dressing in developing countries research in Kenya 著者: Hitch, L. S.

    出版事項 1981
    図書

    Surface dressing in developing countries research in Kenya

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