The fisheries conventions : hearing before the Committee on Foreign Relations, United States Senate, eighty-first Congress, first session, on the ratification by the United States government of the international convention for the Northwest Atlantic Fisheries signed at Washington, February 8, 1949 (executive N) : convention with Mexico for the establishment of an International commission for the scientific investigation of tuna, signed at Mexico City, January 25, 1949 (executive K) : convention for the establishment of an inter-american tuna commission, signed at Washington, May 31, 1949 (executive P) July 14, 1949