United States. Bureau of the Census. "November 1980," Business Conditions Digest (November 1980). https://fraser.stlouisfed.org/title/43/item/7411, accessed on May 6, 2024.
United States. Bureau of the Census. "November 1980," Business Conditions Digest (November 1980). https://fraser.stlouisfed.org/title/43/item/7411, accessed on May 6, 2024.