Air navigation facilities :  distance measuring equipment. 

 - [Washington, D.C.,  1965]. 
 - v. 
<br/><br/> 11/8/65.  CRDP Program Historic Shelflist record. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aeronautical instruments.
<br/><br/><label>Gov. Doc. Class. No.: </label>TD 4.8/5:170-3 B