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

 - London:  George. G. Harrap,  1953. 
 - 295p. 
<br/><br/> HB 
<br/><br/><br/>Eng 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arithmetic
<br/><br/><label>Dewey Class. No.: </label>372.72044  / STC