Caplan, Frank. <br/><br/>
The power of play / 
by Frank and Theresa Caplan. 
 - 1st ed. 
 - Garden City, N.Y :  Anchor Press,  1973. 
 - xx, 334 p. :  ill. ;  22 cm. 
<br/><br/>Bibliography: p. 313-317. 
<br/><br/><label>ISBN: </label>0385087144 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Play.