Highway focus :  December 1974 / 
Department of Transportation of United States 
 - Washington, D.C. :  Department of Transportation,  1974- 
 - v. :  ill. ;  27 cm. 
<br/><br/> Library has vol. 6, no. 4 
<br/><br/>v.6.-.v, 68 p. 
<br/><br/><label>ISSN: </label>0363-7182 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Highway engineering--United States
<br/><br/><label>Dewey Class. No.: </label>625.70973