Public-sector aviation issues graduate research award papers, 1990-1991.
| 格式: | 圖書 | 
|---|---|
| 語言: | English | 
| 出版: | Washington, D.C.
          Transportation Research Board, National Research Council
    
        1992. | 
| 叢編: | Transportation research record
              1332. | 
| 主題: | 


