Highway transportation research and development studies 1973 :  HTRDS 1973 in progrss during fiscal year 1973 

 - Washington, D. C. :  U.S. Dept. of Transportation,  1974 
 - ii, 481 p. ;  29cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Transportation engineering<br/>Traffic engineering
<br/><br/><label>Dewey Class. No.: </label>388.31