Change 9 to utility airports -- air access to national transportation -- refinement of terminology. 

 - [Washington, D.C.,  1987]. 
 - v. 
<br/><br/> Sept. 18, 1987.  Shipping list no. : 87-639-P.  CRDP Program Historic Shelflist record. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Airports--United States.
<br/><br/><label>GPO Item No.: </label>0431-A-02 
<br/><br/><label>Gov. Doc. Class. No.: </label>TD 4.8/5:150/5300-4 B/CH.9