Protocol To U.S.-Belgium Income Tax Treaty Ratified, August 1, 1989, Release Number nb-401
United States. Department of the Treasury. "Protocol To U.S.-Belgium Income Tax Treaty Ratified, August 1, 1989, Release Number nb-401," in United States. Department of the Treasury. "Volume 292," Press Releases of the United States Department of the Treasury (August 1, 1989 - September 21, 1989) : 27-28. https://fraser.stlouisfed.org/title/6111/item/587135/toc/535868 , accessed on May 18, 2024.