United States. Bureau of the Census. "Title Page," in United States. Bureau of the Census. "March 1976," Business Conditions Digest (March 1976) : 2-2. https://fraser.stlouisfed.org/title/43/item/7355/toc/317471 , accessed on May 8, 2024.
United States. Bureau of the Census. "Title Page," in United States. Bureau of the Census. "March 1976," Business Conditions Digest (March 1976) : 2-2. https://fraser.stlouisfed.org/title/43/item/7355/toc/317471 , accessed on May 8, 2024.