A Pratical guide for non-governmental organizations, Unesco clubs, associated schools and other interested groups :  1990 International Literacy Year ILY. 

 - Paris :  UNESCO,  1988. 
 - 47 p. 
<br/><br/><label>No. de Clasificación Universal Decimal: </label>OC 37. 014.22 (083.85) =20 PRA.