Estimated world reguirement of narcotic drugs    And estimates of world production of upium in 1971.    

 - New York  UN           1971 
 - 26p.  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>V1N45.93:3:(F56).N71, L1/UN