International study of achievement in mathematics: a comparison of twelve countries 

 - Stockholm  Almqvist & Wiksell  1967 
 - 368 p.  Vol. 2 
<br/><br/> At head of title: International Project for the Evaluation of Educational Achievement (IEA) phase 1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematical ability<br/>Mathematics - Study and teaching <br/>Comparative education
<br/><br/><label>Dewey Class. No.: </label>151.223