SCHWARTZ William  <br/><br/>
The practice of group work/ 

 - New York,  Columbia University Press,  c1971. 
 - x,284p.; 
<br/><br/> include index  
<br/><br/><label>ISBN: </label>0231032412 
<br/><br/><label>Dewey Class. No.: </label>361.4 SCH