Traffic surveys by post cards.

Traffic surveys by post cards.

Bibliografski detalji
Autor kompanije: National Research Council (U.S.). Highway Research Board
Format: Knjiga
Jezik:English
Izdano: Washington, D.C. Highway Research board, Division of Engineering and Industrial Research, National Research council 1951.
Serija:Highway Research Board Bulletin 41.
Teme:
Origin and destination traffic surveys.