Gregorio, Herman C. <br/><br/>
Principles and methods of teaching/ 
Herman C. Gregorio. 
 - rev. ed. 
 - Quezon City :  Garotech Publishing,  c1960. 
 - xx, 580 p. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>9718711082 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education.<br/>Study skills.<br/>Teaching.
<br/><br/><label>Dewey Class. No.: </label>371.332