United States. Bureau of the Census. "Price Movements," in United States. Bureau of the Census. "June 1971," Business Conditions Digest (June 1971) : 60-61. https://fraser.stlouisfed.org/title/43/item/7555/toc/237478 , accessed on April 25, 2024.
United States. Bureau of the Census. "Price Movements," in United States. Bureau of the Census. "June 1971," Business Conditions Digest (June 1971) : 60-61. https://fraser.stlouisfed.org/title/43/item/7555/toc/237478 , accessed on April 25, 2024.