Williamson, Margaret <br/><br/>
Supervisión :  new patterns and processes. 

 - New York :  Association Press,  1961. 
 - 176 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>CIENCIAS SOCIALES
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>CIENCIAS SOCIALES