World communication report / 
Unesco. 
 - Paris :  Unesco,  c1989. 
 - xix, 551 p. 
<br/><br/><label>ISBN: </label>9231026283 
<br/><br/><label>LCCN: </label>90043073     
<br/><br/><label>Subjects--Topical Terms: </label><br/>Communication.