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.

Bibliografiska uppgifter
Institutionell upphovsman: National Research Council (U.S.). Highway Research Board
Materialtyp: Bok
Språk:English
Publicerad: Washington, D.C. Highway Research Board 1952.
Ämnen:
Traffic regulations > Congresses.