Aeronautics. Sanitary aerial navigation, protocol between United States and other Powers extending international sanitary convention for aerial navigation of Dec. 15, 1944, modifying international sanitary convention for aerial navigation of Apr. 12, 1933; open for signature Washington Apr. 23-May 1, 1946, proclaimed Aug. 6, 1946, effective with respect to United States Aug. 6, 1946.

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