United States. Bureau of the Census. "Rates of Change," in United States. Bureau of the Census. "August 1970," Business Conditions Digest (August 1970) : 67-67. https://fraser.stlouisfed.org/title/43/item/7545/toc/352938 , accessed on May 9, 2024.
United States. Bureau of the Census. "Rates of Change," in United States. Bureau of the Census. "August 1970," Business Conditions Digest (August 1970) : 67-67. https://fraser.stlouisfed.org/title/43/item/7545/toc/352938 , accessed on May 9, 2024.