United States. Bureau of Economic Analysis. "May 1978," Survey of Current Business (May 1978). https://fraser.stlouisfed.org/title/46/item/9684, accessed on May 3, 2024.
United States. Bureau of Economic Analysis. "May 1978," Survey of Current Business (May 1978). https://fraser.stlouisfed.org/title/46/item/9684, accessed on May 3, 2024.