United States. Bureau of Economic Analysis. "August 1967," Survey of Current Business (August 1967). https://fraser.stlouisfed.org/title/46/item/9744, accessed on April 20, 2024.
United States. Bureau of Economic Analysis. "August 1967," Survey of Current Business (August 1967). https://fraser.stlouisfed.org/title/46/item/9744, accessed on April 20, 2024.