Treaties and other international acts series. 2091. Health and sanitation, cooperative program in Mexico, agreement between United States and Mexico, extending and modifying agreement of June 30 and July 1, 1943, as amended, effected by exchange of notes signed Mexico Feb. 10 and 14, 1949; entered into force Feb. 14, 1949, operative retroactively from Dec. 31, 1948.

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