United States. Bureau of the Census. "Title Page," in United States. Bureau of the Census. "February 1977," Business Conditions Digest (February 1977) : 2-2. https://fraser.stlouisfed.org/title/43/item/7366/toc/298143 , accessed on May 3, 2024.
United States. Bureau of the Census. "Title Page," in United States. Bureau of the Census. "February 1977," Business Conditions Digest (February 1977) : 2-2. https://fraser.stlouisfed.org/title/43/item/7366/toc/298143 , accessed on May 3, 2024.