Arithmetic, 1949  papers presented at the fourth annual Conference on Arithmetic held at the University of Chicago July 6-8, 1949 
compiled and edited by G.T. Buswell and Maurice L. Hartung. 
 - Chicago  University of Chicago Press  1949. 
 - v, 100 p.  24 cm. 
 - Supplementary educational monographs  no. 70 .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arithmetic--Study and teaching.<br/>Arithmetic--Congresses.
<br/><br/><label>Dewey Class. No.: </label>372.7