Haas, Kenneth Brooks  1898- <br/><br/>
Preparation and use of audio-visual aids 
Kenneth B. Haas and Harry Q. Packer. 
 - 3d ed. 
 - New York :  Prentice-Hall,  1960. 
 - 381 p. :  illus. ;  24 cm. 
<br/><br/><label>LCCN: </label>55007628  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Audio-visual education.
<br/><br/><label>LC Class. No.: </label>LB1043  / .H3 1955 
<br/><br/><label>Dewey Class. No.: </label>371.335  / HAP 1960