Guggenheim, Paul <br/><br/>
Survey on the ways in which states interpret their international obligations / 
Paul Guggenheim. 
 - Paris :  UNESCO,  1955. 
 - 21 p. 
 - Reports and papers in the social sciences; 1 .
<br/><br/><label>No. de Clasificación Universal Decimal: </label>341 =20 "1955" GUG No.1.