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."
| Корпоративные авторы: | , | 
|---|---|
| Формат: |  | 
| Язык: | English | 
| Опубликовано: | Washington, D.C.
          Transportation Research Board
    
        [1983].. | 
| Серии: | Research results digest (National Cooperative Highway Research Program)
              no. 142. | 
| Предметы: |