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.

ग्रंथसूची विवरण
निगमित लेखक: National Research Council (U.S.). Highway Research Board
स्वरूप: पुस्तक
भाषा:English
प्रकाशित: Washington, D.C. Highway Research Board 1952.
विषय:
Traffic regulations > Congresses.