Twentieth annual report. 

 - New  York United Nations       1969 
 - "vi,164p."  cm. 
 -  Vol.2 .
<br/><br/><label>Standard No.: </label>176561 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Dewey Class. No.: </label>"V1N45,93:3:(X.7).N75r, L5/UN"