Estimated world requirments of narcotics drugs and estimates of world production of opium in 1966 

 - Geneva  United Nations           1966 
 - 25p  cm. 
<br/><br/> Fourth supplement 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>X9(F56):2.1N45.N66, K6