Cable, Ralph <br/><br/>
Audio-visual handbook / 
by Ralph Cable 
 - 2nd ed. 
 - London :  University of London P.,  1965. 
 - 118 p. :  illus. 
<br/><br/><label>ISBN: </label>0340168455 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Audio-visual education
<br/><br/><label>Dewey Class. No.: </label>371.33  / CAB.A