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  1. 1
    出版 1987
    圖書

    The Highway design and maintenance standards model
  2. 2
    由 Puu, Tonu
    出版 1979
    圖書

    The allocation of road capital in two-dimensional space a continuous approach
  3. 3
    由 Bergendahl, Goran 1940-
    出版 1969
    圖書

    Models for investments in a road network
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