A policy on design standards 
prepared by the AASHTO Highway Subcommittee on Design. 
 - Washington, D.C. (444 N. Capitol St., N.W., Suite 225) :  AASHTO,  c1971. 
 - iv, 15 p. ;  23 cm. 
<br/><br/> "December 1988." 
<br/><br/><label>LCCN: </label>89621991  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Interstate Highway System--Design and construction--Standards.<br/>Roads--Design and construction--Standards--United States.
<br/><br/><label>LC Class. No.: </label>TE23  / .A66 1989 
<br/><br/><label>Dewey Class. No.: </label>625.7  / AAS