The Economics of new educational media. 

 - Paris :  Unesco,  1977-1982. 
 - Educational methods and techniques ;  1 .
<br/><br/> "Prepared with the assistance of the International Council for Educational Media." 
<br/><br/>Includes bibliographies. 
<br/><br/>Vol. 1. Present status of research and trends -- v. 2. Cost and effectiveness -- v. 3. Cost and effectiveness overview and synthesis. 
<br/><br/><label>ISBN: </label>9231014234 (pbk. : v. 1) 
<br/><br/><label>LCCN: </label>77557780 //r832 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational technology.
<br/><br/><label>LC Class. No.: </label>LB1028.3  / .E27 
<br/><br/><label>Dewey Class. No.: </label>371.3/07/8