Continuing project to synthesize information on highway problems.
| Соавтор: | |
|---|---|
| Формат: |  | 
| Язык: | English | 
| Опубликовано: | Washington, D.C.
          Transportation Research Board, National Research Council
    
        1990. | 
| Предметы: | 
| Соавтор: | |
|---|---|
| Формат: |  | 
| Язык: | English | 
| Опубликовано: | Washington, D.C.
          Transportation Research Board, National Research Council
    
        1990. | 
| Предметы: |