Betts, Peter W. <br/><br/>
Supervisory studies / 
Peter W. Betts. 
 - 2nd ed. 
 - London :  Macdonald & Evans,  1973. 
 - xiv, 476 p. 
<br/><br/><label>ISBN: </label>0712119299 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Supervision of employees.<br/>Supervisors.<br/>Industrial management.