Συλλογικό Έργο:	United States. Department of Commerce. Bureau of public Roads, Committee on Highway Capacity. Department of Traffic and Operations. Highway Research Board
Μορφή:	Βιβλίο
Γλώσσα:	English
Έκδοση:	Washington, D.C : Government Printing Office, 1950
Θέματα:	Highway engineering