Herbert A. Thelen <br/><br/>
Dynamics of groups at work / 
Thelen A.H. 
 - 11th 
 - Chicago :  The University of Chicago press ,  1977. 
 - 374p. ; 
<br/><br/>includes index. 
<br/><br/><label>ISBN: </label>0226794733 
<br/><br/><label>LC Class. No.: </label>HV 45  / .T44 1977