Stern, Catherine <br/><br/>
Children discover arithmetic  an introduction to structural arithmetic 
Foreword by Marguerite Lehr. 
 - New York  Harper & Row  [1949] 
 - xxi, 295 p. 
<br/><br/>Bibliography: p. 291-302. 
<br/><br/><label>LCCN: </label>91083624  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arithmetic--Study and teaching.
<br/><br/><label>LC Class. No.: </label>QA135  / .S84 1949 
<br/><br/><label>Dewey Class. No.: </label>372.7/2