Wittich, Walter Arno  1910- <br/><br/>
Audio-visual materials :  their nature and use / 
Walter Arno Wittich [and] Charles Francis Schuller 
 - 2nd ed. 
 - New York :  Harper,  c1967 
 - 570 p. :  ill. ;  25 cm. 
 - Exploration series in education .
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label> USD 1095.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Audio-visual education
<br/><br/><label>Dewey Class. No.: </label>371.33