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1.

図書
図書
1. Effects of traffic control devices : presented at the 38th annual meeting january 5-9, 1959 (pbk.)
National Research Council (U.S.). Highway Research Board
出版情報: Washington : National Academy of Sciences - National Research Council, 1960
シリーズ名: Highway research board ; bulletin 244
Publication / National Academy of Sciences, National Research Council ; no. 730
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2.

図書
図書
2. Increasing traffic capacity of arterial streets : presented at the 39th annual meeting january 11-15, 1960 (pbk.)
National Research Council (U.S.). Highway Research Board
出版情報: Washington : National Academy of Sciences - National Research Council, 1960
シリーズ名: Highway research board ; bulletin 271
Publication / National Academy of Sciences, National Research Council ; no. 809
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