Lowdermilk, Ronald R.  1898- <br/><br/>
The school radio-sound system, 
by R. R. Lowdermilk. Published by the Federal radio education committee with the cooperation of the U.S. Office of education, Federal security agency. 
 - Washington, D.C.,  1941. 
 - vi, 58 p.  23 cm. 
 - [Ohio. State university, Columbus. Bureau of educational research. Evaluation of school broadcasts. Pamphlet series, no. 3] .
<br/><br/>Bibliography: p. 57-58. 
<br/><br/><label>LCCN: </label>e  41000403  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Radio in education.<br/>Radio broadcasting.
<br/><br/><label>LC Class. No.: </label>LB1044.5  / .O5 no. 3 
<br/><br/><label>Dewey Class. No.: </label>371.333