Foutth report of the committee established in pursuance  of security council resolutions 253 (1968) 

 - New York  UN           1971 
 - iv, 255p  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>V1N45,93:8.N68, L1 /UN