United States. Bureau of Economic Analysis. "April 1948," Survey of Current Business (April 1948). https://fraser.stlouisfed.org/title/46/item/9462, accessed on May 3, 2024.
United States. Bureau of Economic Analysis. "April 1948," Survey of Current Business (April 1948). https://fraser.stlouisfed.org/title/46/item/9462, accessed on May 3, 2024.