Varma, Ravi <br/><br/>
Action research and the production of communication media  : report of the all India Field Worksp... 

 - (s.l.) :  University of Reading,  1973) 
 - 32 p. 
<br/><br/><label>LCCN: </label>47960 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Comunicación en agricultura.<br/>Extensión agrícola.