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

التفاصيل البيبلوغرافية
مؤلفون مشاركون:	HRB-AASHO Joint Committee on Maintenance and Operations Personnel, National Research Council (U.S.). Highway Research Board
التنسيق:	كتاب
منشور في:	Washington, D.C. Highway Research Board
سلاسل:	Highway Research Circular no. 140.
الموضوعات:	Highway departments > United States > Employees > Statistics. Wages > Highway transport workers > United States. Wages > Construction workers > United States.