Butler Charles H <br/><br/>
Teaching of secondary mathematics. 

 - 5 
 - New York     McGraw-Hill        1970 
 - vi,597p.  cm. 
<br/><br/><label>Standard No.: </label>34569 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>T2:3(B), L0