Howard, Charles Frederick. <br/><br/>
Teaching contemporary mathematics in the elementary school /  
by C harles F. Howard and Enoch Dumas. 
 - New York :    Harper & Row,    1966. 
 - xvi, 309 p. :    ill. ;    22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Mathematics -- Study and teaching (Elementary).
<br/><br/><label>Dewey Class. No.: </label>510.713