Report 

 - New York  United Nations          1977 
 - vii, 281p  cm. 
<br/><br/> Supp.no 23 (A/10023/Rev. 1) 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>V1N45,933:8.N75r, L5,28.3 /UN