Guidelines for airport spacing & traffic pattern airspace areas. 

 - [Washington, D.C.,  1971]. 
 - v. 
<br/><br/> 3 Aug. 1971.  CRDP Program Historic Shelflist record. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Airports--Traffic control.
<br/><br/><label>Gov. Doc. Class. No.: </label>TD 4.8/2:7480.1 A