Price-subsidy issues in urban transportation 6 reports ; prepared for the 52nd annual meeting.
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格式: | 图书 |
语言: | English |
出版: |
Washington, D.C.
Highway Research Board, Division of Engineering, National Research Council, National Academy of Sciences--National Academy of Engineering
1973.
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丛编: | Highway research record
no. 476. |
主题: |