Continuing project to synthesize information on highway problems.
"A staff digest of the progress and status of NCHRP Project 20-5, "Synthesis of information related to highway problems," for which the Transportation Research Board is the agency conducting the research."
| 共著者: | , | 
|---|---|
| フォーマット: | 図書 | 
| 言語: | English | 
| 出版事項: | Washington, D.C.
          Transportation Research Board
    
        [1985] | 
| シリーズ: | Research results digest (National Cooperative Highway Research Program)
              no. 148. | 
| 主題: |