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.  illus.  22 cm. 
<br/><br/>Bibliography: p. [313]-317. 
<br/><br/><label>ISBN: </label>0385087144 
<br/><br/><label>LCCN: </label>68010557  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Play
<br/><br/><label>LC Class. No.: </label>BF717  / .C26 
<br/><br/><label>Dewey Class. No.: </label>155.4/1