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.

Détails bibliographiques
Collectivité auteur: National Research Council (U.S.). Highway Research Board
Format: Livre
Langue:English
Publié: Washington, D.C. Highway Research Board 1952.
Sujets:
Traffic regulations > Congresses.