Treaties and other international acts series. 6089. Double taxation, taxes on income, supplementary protocol between United States and United Kingdom of Great Britain and Northern Ireland, amending convention of Apr. 16, 1945, as modified by supplementary protocols of June 6, 1949, May 25, 1954, and Aug. 19, 1957, signed London Mar. 17, 1996, [proclaimed by President of United States Sept. 15, 1966; entered into force Sept. 9, 1966].

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