Sapora, Allen Victor Heimbach,    1912- <br/><br/>
The theory of play and recreation /    
Allen V. Sapora and Elmer D. Mitchell. 
 - 3rd ed. 
 - New York :   Ronald Press Co.,   1961. 
 - 558 p. ;    21 cm. 
<br/><br/>  Previous editions, by Elmer D. Mithell and Bernard S. Mason, publish ed under title: The theory of play. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Play.--------<br/>Physical education and training.--------
<br/><br/><label>Dewey Class. No.: </label>790.1