United States. Bureau of the Census. "Consumers' Prices," in United States. Bureau of the Census. "May 1970," Business Conditions Digest (May 1970) : 104-104. https://fraser.stlouisfed.org/title/43/item/7542/toc/272054 , accessed on May 4, 2024.
United States. Bureau of the Census. "Consumers' Prices," in United States. Bureau of the Census. "May 1970," Business Conditions Digest (May 1970) : 104-104. https://fraser.stlouisfed.org/title/43/item/7542/toc/272054 , accessed on May 4, 2024.