Selection and certification in education and employment 

 - Paris :  OECD,  1977 
 - 144 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references 
<br/><br/><label>ISBN: </label>9264116117 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Teachers--Certification<br/>School employees--Certification<br/>Professions--Certification