Treaties and other international acts series. 6364. World meteorological organization, amendments to certain articles of convention of Oct. 11, 1947, adopted by 5th congress of World Meteorological Organization, Geneva, Apr. 11 and 26, 1967; [entered into force Apr. 11, 1867, with respect to articles 4(b) and 12(c); entered into force Apr. 26, 1967, with respect to article 13(a), French text; entered into force Apr. 28, 1967, with respect to certain other articles.]