Thelen, Herbert Arnold <br/><br/>
Dynamics of groups at work 
by Herbert Arnold Thelen 
 - Chicago  University of Chicago  1954 
 - 379p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social group work
<br/><br/><label>Dewey Class. No.: </label>Q25 T341