Spriegel, W.R.,Schulz, E. <br/><br/>
Elements Of Supervision. 

 - 2nd 
 - New York :  John Wiley,  1957 
 - 349 pages. 
<br/><br/><br/>English 
<br/><br/><label>Subjects--Topical Terms: </label>--Supervision,
<br/><br/><label>Dewey Class. No.: </label>658.302 SPR