Traffic research problem statements presented at the 31st annual meeting, January 14-18, 1952.

Traffic research problem statements presented at the 31st annual meeting, January 14-18, 1952.

Opis bibliograficzny
Korporacja: National Research Council (U.S.). Highway Research Board
Format: Książka
Język:English
Wydane: Washington, D.C. Highway Research Board 1952.
Hasła przedmiotowe:
Traffic regulations > Congresses.