Wiles, Kimball <br/><br/>
Supervision for better schools 

 - 3rd ed. 
 - London  Prentice-hall, inc.  1967 
 - xxi, 337p.; 24cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Guidlines - supervisor<br/>School supervision<br/>Staff development<br/>Supervisor - principal