Kenworthy, Leonard S. <br/><br/>
Telling the UN story :  new approaches to teaching about the United Nations and its related agencies / 
Leonard S. Kenworthy. 
 - 2a ed. 
 - Paris :  UNESCO,  1964. 
 - 166 p. ; 20 cm. lamns. 
<br/><br/><label>No. de Clasificación Universal Decimal: </label>37.017.7 (100) =20 "1964" KEN