Ways and means to traffic safety. Recommendations of National conference on street and highway safety, including findings of all conference committees and of general meetings of conference held in 1924, 1926 and 1930, as summarized and approved by third National conference, May 27-28-29, 1930.
Washington, D.C., National conference on street and highway safety 
Traffic regulations > United States.
Automobiles > Law and legislation > United States.
Accidents > Prevention.
|Original Classification Number:||HE371.A2 N3 1930a|
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