Traffic surveys by post cards.

Traffic surveys by post cards.

Bibliografiske detaljer
Institution som forfatter: National Research Council (U.S.). Highway Research Board
Format: Bog
Sprog:English
Udgivet: Washington, D.C. Highway Research board, Division of Engineering and Industrial Research, National Research council 1951.
Serier:Highway Research Board Bulletin 41.
Fag:
Origin and destination traffic surveys.