United States. Bureau of the Census. "July 1976," Business Conditions Digest (July 1976). https://fraser.stlouisfed.org/title/43/item/7359, accessed on March 28, 2024.
United States. Bureau of the Census. "July 1976," Business Conditions Digest (July 1976). https://fraser.stlouisfed.org/title/43/item/7359, accessed on March 28, 2024.