Wellhausen, E J  <br/><br/>
Classification for surveys of highly trained personnel   

 - Washington 6, D.C.:   American Council of Learned Societies,   1953 
 - 147p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Business management,
<br/><br/><label>Subjects--Index Terms: </label>Physics  Chemistry  
<br/><br/><label>Universal Decimal Class. No.: </label>658.311   / J3