Johnson, David W.,  1940- <br/><br/>
Joining together :  group theory and group skills / 
by David W. Johnson and Frank P. Johnson 
 - Englewood Cliffs, N.J. :  Prentice-Hall International,  1975 
 - 470 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>0135103886 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social groups<br/>Leadership<br/>Group relations training