檢索結果 - "Roads, Gravels"

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    Stability of gravel sub-bases /

    Stability of gravel sub-bases / 由 Earland, M. G.

    出版 1985
    主題: “...Roads, Gravels Great Britain....”
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    The performance of experimental weathered basalt gravel roads in Ethiopia /

    The performance of experimental weathered basalt gravel roads in Ethiopia / 由 Beaven, P. J.

    出版 1988
    主題: “...Roads, Gravel....”
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