Guidelines for selecting a small highway sign support system 

 - Washington, D.C. :  United States Government Printing Office,  1979 
 - 71 p. :  ill. ;  28 cm. 
 - Implementation package ;  FHWA-IP-79-7 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Highway safety<br/>Federal highway system
<br/><br/><label>Dewey Class. No.: </label>363.125