Diferentiating the media : proceedings of the Thirty-Seventh Annual Conference of the Graduate Library School, august 5-6, 1974 / edited by Lester Asheim, and Sara I. Fenwick 

 - Chicago, Ill. :  University of Chicago,  1975 
 - 74 p. 
<br/><br/> Monografía 
<br/><br/><label>ISBN: </label>0226029646 
<br/><br/><label>Subjects--Corporate Names: </label><br/>Chicago University. Graduate Library School
<br/><br/><label>Subjects--Index Terms: </label>Bibliotecas y Medios de Comunicación Masiva 
<br/><br/><label>LC Class. No.: </label>Z717/A83