Spears, Harold <br/><br/>
Some principles of teaching. 
Illus. by the author. 
 - New York  Prentice Hall  c1951. 
 - xii, 339 p.  illus.  22 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0837133742 (ed. 1973) 
<br/><br/><label>LCCN: </label>91106671  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Teaching
<br/><br/><label>LC Class. No.: </label>LB1025  / .S679 1951 
<br/><br/><label>Dewey Class. No.: </label>371.1/02