United States. Bureau of the Census. "Title Page," in United States. Bureau of the Census. "October 1977," Business Conditions Digest (October 1977) : 2-2. https://fraser.stlouisfed.org/title/43/item/7374/toc/392148 , accessed on April 19, 2024.
United States. Bureau of the Census. "Title Page," in United States. Bureau of the Census. "October 1977," Business Conditions Digest (October 1977) : 2-2. https://fraser.stlouisfed.org/title/43/item/7374/toc/392148 , accessed on April 19, 2024.