United States. Bureau of the Census. "Price Movements," in United States. Bureau of the Census. "April 1970," Business Conditions Digest (April 1970) : 92-92. https://fraser.stlouisfed.org/title/43/item/7541/toc/179596 , accessed on May 9, 2024.
United States. Bureau of the Census. "Price Movements," in United States. Bureau of the Census. "April 1970," Business Conditions Digest (April 1970) : 92-92. https://fraser.stlouisfed.org/title/43/item/7541/toc/179596 , accessed on May 9, 2024.