Stern Catherine <br/><br/>
Children discover arithmetic, an introduction to structural arithmetic 

 -  1953 
<br/><br/><label>Standard No.: </label>149,516 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>EDUCATION
<br/><br/><label>Dewey Class. No.: </label>T13:3:B, J3