United States. Bureau of the Census. "Rates of Change," in United States. Bureau of the Census. "March 1977," Business Conditions Digest (March 1977) : 46-46. https://fraser.stlouisfed.org/title/43/item/7367/toc/276399 , accessed on April 24, 2024.
United States. Bureau of the Census. "Rates of Change," in United States. Bureau of the Census. "March 1977," Business Conditions Digest (March 1977) : 46-46. https://fraser.stlouisfed.org/title/43/item/7367/toc/276399 , accessed on April 24, 2024.