United States. Bureau of Economic Analysis. "October 1972," Survey of Current Business (October 1972). https://fraser.stlouisfed.org/title/46/item/9824, accessed on April 18, 2024.
United States. Bureau of Economic Analysis. "October 1972," Survey of Current Business (October 1972). https://fraser.stlouisfed.org/title/46/item/9824, accessed on April 18, 2024.