Koon, Cline Morgan,  1894- <br/><br/>
School use of visual aids;  an interpretative study of the data collected in the national survey of visual instruction in elementary and secondary schools, 
by Cline M. Koon, senior specialist in radio and visual education ... United States Department of the interior, Harold L. Ickes, secretary. Office of education, J.W. Studebaker, commissioner of education. 
 - [Washington,  U.S. Govt. print. off.,  1938] 
 - viii, 68 p.  incl. illus., tables, diagrs.  23 cm. 
 - U. S. Office of education. Bulletin, 1938,  no. 4 .
<br/><br/> "The survey was made by the Office of education with the cooperation of the American council on education, in 1936." -- Foreword. 
<br/><br/>Copies 1 and 2 of L111.A6 with: School custodian / James Frederick Rogers. Washington : U.S. Govt. Print. Off., 1938. Bound together subsequent to publication. 
<br/><br/>Contains references. 
<br/><br/><label>LCCN: </label>e  38000395  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Visual education.<br/>Motion pictures in education.
<br/><br/><label>LC Class. No.: </label>L111  / .A6 1938, no. 4