Burton William H <br/><br/>
Supervision : Democratic leadership in the improvement of learning 

 - 2 
 - New York, USA  Appleton - Century - Crofts  1947 
 - viii,879p 
<br/><br/><label>Source: </label>Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational Test and Measurements