Estimated world requirements of narcotic drugs   and estimates of world production of opium    

 - New York  United Nations          1967 
 - xv, 71p  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>X9(F56):2.1.N68, K7 /UN