Hughes, Lloyd H <br/><br/>
The Mexican cultural mission programme / 
Lloyd H. Hughes. 
 - Paris :  UNESCO,  1950. 
 - 77 p. ;  il. 
 - Monographs on fundamental education; 3 .
<br/><br/><label>No. de Clasificación Universal Decimal: </label>37.018.8 (72) =20 HUG No.3.