DuFour, Richard P. <br/><br/>
The principle as staff developer / 
Richard P. DuFour  
 - Bloomington :  National Educational Service,  1991 
 - 105 p. : 
<br/><br/>Includes bibliography 
<br/><br/><label>ISBN: </label>1879639017 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Staff Developer
<br/><br/><label>LC Class. No.: </label>LB1731 .D77 1999