McKown, Harry Charles, 1892-  McKown, Harry Charles, 1892- <br/><br/>
Audio-visual aids to instruction / 
by Harry C. McKown...and Alvin B. Roberts... 
 - 2nd ed. 
 - New York ; London :  New York ; London :  McGraw-Hill book Co., Inc.,  1949. 
 - McGraw-Hill series in education, Harold Benjamin, consulting editor .
<br/><br/> "Selected references" at end of each chapter except chapter III. "Sources of materials and equipment": p.579-595. 
<br/><br/><label>LCCN: </label>49010937 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Audio-visual education.
<br/><br/><label>LC Class. No.: </label>LB1043  / .M3 1949 
<br/><br/><label>Dewey Class. No.: </label>371.33