Permanent Central Opium Board : report to the Economic and Social Council on the work of the Board in 1956, issued in compliance with the terms of the Convention of Feb. 19, 1925, on narcotic drugs, and the Convention of July 13, 1931, for limiting the manufacture and regulating the distribution of narcotic drugs, as amended by the protocol of Dec. 11, 1946.
Great Britain.His Majesty's Stationery Office.
United Nations,issuing body.
"1956.XI.4.Addendum."