The economics of new educational media 

 - Paris  ; Unesco  , 1977 
 - 200p. 
<br/><br/><label>ISBN: </label>9231014234  F 36 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics
<br/><br/><label>Dewey Class. No.: </label>330  / ECO