Anthropology and language science in educational development. 

 - Paris :  UNESCO,  1973. 
 - 58 p.;  fot. 
 - Educational studies and documents, new series ;  11 .
<br/><br/><label>ISBN: </label>9231010956 
<br/><br/><label>No. de Clasificación Universal Decimal: </label>37.015.2 =20 ANT No.11