United States. Bureau of Economic Analysis. "June 1969," Survey of Current Business (June 1969). https://fraser.stlouisfed.org/title/46/item/9782, accessed on March 29, 2024.
United States. Bureau of Economic Analysis. "June 1969," Survey of Current Business (June 1969). https://fraser.stlouisfed.org/title/46/item/9782, accessed on March 29, 2024.