Spears, Harold <br/><br/>
Some principles of teaching / 
[by] Harold Spears 
 - New York :  Prentice-Hall,  1949 
 - 147 p. ;  18 cm. 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education<br/>Teaching