Treaties and other international acts series. 1996. Food production, cooperative program in Costa Rica, agreement between United States and Costa Rica, amending and extending agreement of Aug. 27 and Oct. 5, 1948, effected by exchange of notes signed San Joré July 21 and Aug. 18, 1949; entered into force Aug. 22, 1949, operative retroactively from June 30, 1949.