Thorpe, Cleata B. <br/><br/>
Teaching elementary arithmetic / 
Cleata B. Thorpe 
 - New York :  Harper & Brothers,  c1962 
 - xiii, 412 p. :  illus. ;  22 cm. 
 - Harper's series on teaching .
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label> USD 6.50 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arithmetic--Study and teaching (Elementary)
<br/><br/><label>Dewey Class. No.: </label>372.7