Trecker, Harleigh Bradley, 1911-  Trecker, Harleigh Bradley, 1911- <br/><br/>
Social group work :  principles and practices / 
Rev. and enl. 
 - New York :  Association Press,  [1955] 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social group work.
<br/><br/><label>LC Class. No.: </label>HV 45 TRE 1955