New educational media in action, case studies for planners. 

 - Paris :  Unesco : International Institute for Educational Planning,  1967. 
 - 3 v. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Teaching--Aids and devices.<br/>Educational planning.