Roberts, M. <br/><br/>
Potency, Power & People in Groups/  eng. 
Roberts, M. 
 - Ethul Kotte:  Marga Institute,  2011. 
 - xii,128p.:  Photographs;  21cm. 
<br/><br/><label>ISBN: </label>9789555821292 
<br/><br/><label>Dewey Class. No.: </label>954.93  / ROB