Education and essential needs of the rural population of Central America :  experiments in six villages. 

 - Paris :  New York :  UNESCO;  UNICEF,  1980. 
 - 155 p.  il. 
<br/><br/><label>ISBN: </label>9231017632 
<br/><br/><label>No. de Clasificación Universal Decimal: </label>37.018. 523 (728)=20 "1980" EDU.