Improvement of the present system of traffic accident records

Sonraí bibleagrafaíochta
Príomhchruthaitheoir: Office of Highway Safety, U.S. Bureau of Public Roads
Formáid: LEABHAR
Teanga:English
Foilsithe / Cruthaithe: Evanston, Ill. Traffic Institute, Northwestern University c1963.
Ábhair: