United States. Department of the Treasury. "Decision on Potassium Chloride made under Antidumping Act, August 21, 1969," in United States. Department of the Treasury. "Volume 165," Press Releases of the United States Department of the Treasury (May 6, 1969 - August 29, 1969) : 486-487. https://fraser.stlouisfed.org/title/6111/item/587008/toc/541543 , accessed on June 22, 2024.