Treaties and other international acts series. 2499. Public roads program in the Philippines, agreements between United States and Republic of the Philippines, amending agreement of Feb. 14, 1947, effected by exchange of notes, signed Manila July 6 and 17, 1951, entered into force July 17, 1951. and exchange of notes, signed Manila Dec. 16 and 21, 1949; entered into force Dec. 21, 1949.