Gregorio, Herman C. <br/><br/>
School administration and supervision. 

 - rev. ed. 
 - xiv, 550 p.  25cm. 
<br/><br/><label>ISBN: </label>971-871109-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Schools--Administration.<br/>School supervision.
<br/><br/><label>Dewey Class. No.: </label>372.2 G861 1961