Certification of airway systems, systems, and equipment. 

 - [Washington, D.C.,  1978]. 
 - v. 
<br/><br/> Feb. 1978.  CRDP Program Historic Shelflist record. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Air traffic control--Certification.
<br/><br/><label>GPO Item No.: </label>0431-C-04 
<br/><br/><label>Gov. Doc. Class. No.: </label>TD 4.8/2:6030.22 A/CH.2