United States. Bureau of the Census. "NBER Short List," in United States. Bureau of the Census. "July 1974," Business Conditions Digest (July 1974) : 45-48. https://fraser.stlouisfed.org/title/43/item/7335/toc/332319 , accessed on April 25, 2024.
United States. Bureau of the Census. "NBER Short List," in United States. Bureau of the Census. "July 1974," Business Conditions Digest (July 1974) : 45-48. https://fraser.stlouisfed.org/title/43/item/7335/toc/332319 , accessed on April 25, 2024.