Air taxi operators and commercial operators. 

 - [Washington, D.C.,  1980]. 
 - v. 
<br/><br/> Dec. 1980.  CRDP Program Historic Shelflist record. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Airworthiness certificates.
<br/><br/><label>GPO Item No.: </label>0431-A-27 
<br/><br/><label>Gov. Doc. Class. No.: </label>TD 4.8/5:135-3 B/CH.1