United States. Bureau of the Census. "Rates of Change," in United States. Bureau of the Census. "March 1976," Business Conditions Digest (March 1976) : 71-71. https://fraser.stlouisfed.org/title/43/item/7355/toc/317510 , accessed on May 9, 2024.
United States. Bureau of the Census. "Rates of Change," in United States. Bureau of the Census. "March 1976," Business Conditions Digest (March 1976) : 71-71. https://fraser.stlouisfed.org/title/43/item/7355/toc/317510 , accessed on May 9, 2024.