United States. Bureau of Economic Analysis. "November 1987," Survey of Current Business (November 1987). https://fraser.stlouisfed.org/title/46/item/10079, accessed on April 20, 2024.
United States. Bureau of Economic Analysis. "November 1987," Survey of Current Business (November 1987). https://fraser.stlouisfed.org/title/46/item/10079, accessed on April 20, 2024.