The Economics of New Educational Media 

 - Paris:  Unesco,  1977. 
 - 197p.;  22cm 
<br/><br/><label>ISBN: </label>92 3 101423 4 
<br/><br/><label>Subjects--Topical Terms: </label><br/>School Education
<br/><br/><label>Dewey Class. No.: </label>371.33  / ECO