Blumberg, Herbert H., <br/><br/>
Small Group Research : 

 -  Peter Lang,  2009. 
 - 578 pages 
<br/><br/><label>ISBN: </label>9783039105175 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education.
<br/><br/><label>Dewey Class. No.: </label>302.34  / BLU