Treaties and other international acts series. 2149. Education, cooperative program in Panama, agreement between United States and Panama extending program provided for by agreement of Nov. 13 and 14, 1944, as extended by agreement of Sept. 23 and 24, 1948, effected by exchange of notes signed Panama, July 23 and Sept. 2, 1948, entered into force Sept. 2, 1948, operative retroactively from June 30, 1949.