TY  - BOOK
AU  - UNITED NATIONS, INTERNATIONAL NARCOTICS CONTROL BOARD.
ED  - UNITED NATIONS, INTERNATIONAL NARCOTICS CONTROL BOARD.
TI  - Estimated world requirements of Narcotic Drugs:  and estimates of world production of opium in 1971.   
U1  - V1N45,93:3:(F56).N71, L1/UN 
PY  - 1971///
CY  - New York
PB  - United nations        
ER  -