Report to the Economic and Social Council on statistics of narcotics for 1949 and the work of the Board in 1950 : issued in compliance with the terms of the Geneva Opium Convention, signed on February 19, 1925, and the Convention for Limiting the Manufacture and Regulating the Distribution of Narcotic Drugs, signed at Geneva on July 13, 1931, as amended by the Protocol of December 11, 1946.
United Nations.Permanent Central Opium Board,issuing body.
Great Britain.His Majesty's Stationery Office.
"Sold but not published by H.M. Stationery Office."