United States. Bureau of the Census. "Table of Contents," in United States. Bureau of the Census. "June 1976," Business Conditions Digest (June 1976) : 3-4. https://fraser.stlouisfed.org/title/43/item/7358/toc/71593 , accessed on May 4, 2024.
United States. Bureau of the Census. "Table of Contents," in United States. Bureau of the Census. "June 1976," Business Conditions Digest (June 1976) : 3-4. https://fraser.stlouisfed.org/title/43/item/7358/toc/71593 , accessed on May 4, 2024.