United States. Bureau of the Census. "Title Page," in United States. Bureau of the Census. "November 1981," Business Conditions Digest (November 1981) : 2-2. https://fraser.stlouisfed.org/title/43/item/7423/toc/59868 , accessed on April 23, 2024.
United States. Bureau of the Census. "Title Page," in United States. Bureau of the Census. "November 1981," Business Conditions Digest (November 1981) : 2-2. https://fraser.stlouisfed.org/title/43/item/7423/toc/59868 , accessed on April 23, 2024.