United States. Bureau of the Census. "Consumers' Prices," in United States. Bureau of the Census. "April 1972," Business Conditions Digest (April 1972) : 72-72. https://fraser.stlouisfed.org/title/43/item/7565/toc/54937 , accessed on April 24, 2024.
United States. Bureau of the Census. "Consumers' Prices," in United States. Bureau of the Census. "April 1972," Business Conditions Digest (April 1972) : 72-72. https://fraser.stlouisfed.org/title/43/item/7565/toc/54937 , accessed on April 24, 2024.