International study of achievement in mathematics:   A comparison of twelve countries  
/John Wiley & Sons, Vol. 1 
 - New York:   John Wiley & Sons,  1967 
 - 304p.  
 - International project for the evaluation of educational achievement (IEA)     Phase I  .
<br/><br/><label>Subjects--Topical Terms: </label><br/>International study 
<br/><br/><label>Subjects--Index Terms: </label>Mathematics achievement   
<br/><br/><label>Universal Decimal Class. No.: </label>37.001.5:51   / K7.1