Shoemaker, Pamela J. <br/><br/>
Gatekeeping theory / 
Pamela J. Shoemaker, Tim P. Vos 
 -  Routledge  2009 
<br/><br/>20711 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Communication - Philosophy
<br/><br/><label>LC Class. No.: </label>P90  / Sho