United States. Bureau of the Census. "Title Page," in United States. Bureau of the Census. "July 1976," Business Conditions Digest (July 1976) : 2-2. https://fraser.stlouisfed.org/title/43/item/7359/toc/244093 , accessed on March 29, 2024.
United States. Bureau of the Census. "Title Page," in United States. Bureau of the Census. "July 1976," Business Conditions Digest (July 1976) : 2-2. https://fraser.stlouisfed.org/title/43/item/7359/toc/244093 , accessed on March 29, 2024.