Johnson, David W. (1940-) <br/><br/>
Joining together : Group theory and group skills / David W. Johnson, Frank P. Johnson 

 - New Jersey, USA : Prentice-Hall 
 - 470 Pag 
<br/><br/><label>ISBN: </label>0-13-510-370-3 
<br/><br/><label>Dewey Class. No.: </label>G 302.34 J661j