SUMNER (W L) <br/><br/>
Teaching of arithmatic and elementary mathematics 

 - Oxford  Basil Blackwell  1946 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Teaching<br/>of<br/>mathematics<br/>elementary<br/>arithmatic<br/>and
<br/><br/><label>Dewey Class. No.: </label>370/83