Change 6 to utility airports--air access to national transportation--airport type and airport hazard clarification. 

 - [Washington, D.C.,  1983]. 
 - v. 
<br/><br/> Change 6.  2/24/83.  S/N 050-007-00630-6.  $5.50.  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-27 
<br/><br/><label>Gov. Doc. Class. No.: </label>TD 4.8/5:150/5300-4 B/CH.6