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.

التفاصيل البيبلوغرافية
مؤلف مشترك: National Research Council (U.S.). Highway Research Board
التنسيق: كتاب
اللغة:English
منشور في: Washington, D.C. Highway Research Board 1952.
الموضوعات:
Traffic regulations > Congresses.