Hallak, Jacques,  1937- <br/><br/>
Educational challenges of the 21st century :  The vision of quality / 
JacquesHallak 
 - Paris :  UNESCO;  IIEP,  1996. 
 - v, 13 p. 
 - IIEP Contributions ;  23. .
<br/><br/><label>No. de Clasificación Universal Decimal: </label>371.3 (100) =20 HAL No.23