Essentials of rural welfare :  an approach to the improvement of rural well-being / 
Food and Agriculture Organization of the United Nations. 
 - Washington :  ONU,  1949. 
 - 43 p. 
<br/><br/> Disponible en la Colección Medina 
<br/><br/><label>Encabezamiento--Tema: </label><br/>CONDICIONES RURALES<br/>Sociología rural