Hartley, Ruth E.  1909- <br/><br/>
Understanding children's play, 
by Ruth E. Hartley, Lawrence K. Frank [and] Robert M. Goldenson. 
 - New York,  Columbia University Press,  1952.  [printing1954] 
 - 372 p. :  illus.  22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Play--Psychological aspects.<br/>Child psychology.
<br/><br/><label>Dewey Class. No.: </label>136.7470  / HAU 1954