United States. Bureau of the Census. "Rates of Change," in United States. Bureau of the Census. "March 1973," Business Conditions Digest (March 1973) : 71-71. https://fraser.stlouisfed.org/title/43/item/7319/toc/153747 , accessed on April 25, 2024.
United States. Bureau of the Census. "Rates of Change," in United States. Bureau of the Census. "March 1973," Business Conditions Digest (March 1973) : 71-71. https://fraser.stlouisfed.org/title/43/item/7319/toc/153747 , accessed on April 25, 2024.