United States. Bureau of the Census. "Leading Indicators," in United States. Bureau of the Census. "July 1975," Business Conditions Digest (July 1975) : 73-73. https://fraser.stlouisfed.org/title/43/item/7347/toc/239375 , accessed on June 30, 2024.
United States. Bureau of the Census. "Leading Indicators," in United States. Bureau of the Census. "July 1975," Business Conditions Digest (July 1975) : 73-73. https://fraser.stlouisfed.org/title/43/item/7347/toc/239375 , accessed on June 30, 2024.