De Kieffer, Robert E. <br/><br/>
Manual of audio-visual techniques 
R. E. de Kieffer, Lee W. Cochran. 
 - Englewood Cliffs, N.J.  Prentice-Hall  1955. 
 - 220 p.  illus. 
 - Prentice-Hall education series .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Audiovisual education.
<br/><br/><label>Dewey Class. No.: </label>371.33