Treaties and other international acts series. 4839. Surplus agricultural commodities, arrangements in connection with shipment of cargo of rice, agreement between United States and Ceylon, relating to agreement of Mar. 13, 1050, as amended May 28, 1059, effected by exchange of notes signed Washington Dec. 1 and 8, 1959: [entered into force Dec. 8, 1959, operatively retroactively Nov. 10, 1959.