United States. Bureau of the Census. "Price Movements," in United States. Bureau of the Census. "June 1971," Business Conditions Digest (June 1971) : 92-92. https://fraser.stlouisfed.org/title/43/item/7555/toc/237508 , accessed on April 18, 2024.
United States. Bureau of the Census. "Price Movements," in United States. Bureau of the Census. "June 1971," Business Conditions Digest (June 1971) : 92-92. https://fraser.stlouisfed.org/title/43/item/7555/toc/237508 , accessed on April 18, 2024.