Vandevelde, L. <br/><br/>
Conceptual and methodological considerations concerning the notion of a "common core" of training / 
by L. Vandevelde. 
 - Paris :  UNESCO,  1983. 
 - 28 p. 
<br/><br/><label>No. de Clasificación Universal Decimal: </label>371.13 (100) =20 "1983" VAN.