Ecker, H Paul...[et al.]. <br/><br/>
Handbook for supervisors 

 - 2nd ed. 
 - New Jersey  Prentice Hall  1970 
 - 217p. 
<br/><br/><label>Subjects--Index Terms: </label>Hand book 
<br/><br/><label>Dewey Class. No.: </label>658.43  / ECK