Progress report of HRB-AASHO Joint Committee on Maintenance and Operations Personnel.

Progress report of HRB-AASHO Joint Committee on Maintenance and Operations Personnel.

書誌詳細
共著者: HRB-AASHO Joint Committee on Maintenance and Operations Personnel, National Research Council (U.S.). Highway Research Board
フォーマット: 図書
出版事項: Washington, D.C. Highway Research Board
シリーズ:Highway Research Circular no. 140.
主題:
Highway departments > United States > Employees > Statistics.
Wages > Highway transport workers > United States.
Wages > Construction workers > United States.