U.S. and Belgium to discuss revision of Income Tax Convention, December 18, 1968
United States. Department of the Treasury. "U.S. and Belgium to discuss revision of Income Tax Convention, December 18, 1968," in United States. Department of the Treasury. "Volume 163," Press Releases of the United States Department of the Treasury (October 1, 1968 - January 20, 1969) : 514-515. https://fraser.stlouisfed.org/title/6111/item/587006/toc/541256 , accessed on June 23, 2024.