Estimated world reguirement of narcotic drugs    And estimates of world production of upium in 1972.    

 - New York  UN           1972 
 - 30p.  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>V1N45,93:3:(F56).N72, L2/UN