Preparing for public service occupations :  educational services 

 - Washington, D.C. :  United States Government Printing Office, 
 - Various pagings ;  28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Occupations<br/>Professions--Certification--United States
<br/><br/><label>Dewey Class. No.: </label>331.7