Treaties and other international acts series. 2695. Weather stations, cooperative program in Mexico, agreement between United States and Mexico, extending agreement of Mar. 29 and Aug. 15, 1949, effected by exchange of notes dated Mexico, D. P., Apr. 7 and Aug. 22, 1952; entered into force Aug. 22, 1952, operative retroactively from July 1, 1951.

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