Izard, John <br/><br/>
Assessing learning achievement / 
by John Izard. 
 - Paris :  UNESCO,  1992. 
 - 47 p. 
 - Educational studies and documents, new series; 60 .
<br/><br/><label>ISBN: </label>923102793X 
<br/><br/><label>No. de Clasificación Universal Decimal: </label>37.001.4 (100)=20 "1992" IZA No.60.