Powell, Leonard Sutherland. <br/><br/>
Communication and learning 
[by] Len S. Powell. 
 - New York  American Elsevier Pub. Co.  1969. 
 - xii, 217 p.  illus., maps. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>ISBN: </label>
<br/><br/><label>LCCN: </label>79082742  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Learning<br/>Communication in education<br/>Audiovisual education.