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1.

図書
図書
1. Air pollution controls for urban transportation : 8 reports (pbk.)
National Research Council (U.S.). Highway Research Board
出版情報: Washington : Highway Research Board, National Research Council, 1973
シリーズ名: Highway research record ; no. 465
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2.

図書
図書
2. Highway and urban transportation in the 1970's and 1980's : a panel discussion at the plenary session of the 50th Annual Meeting of the Highway Research Board, January 19, 1971 (pbk.)
National Research Council (U.S.). Highway Research Board
出版情報: Washington : Highway Research Board, National Research Council, 1971
シリーズ名: Highway Research Board special report ; 122
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