United States. Bureau of the Census. "NBER Short List," in United States. Bureau of the Census. "March 1974," Business Conditions Digest (March 1974) : 45-48. https://fraser.stlouisfed.org/title/43/item/7331/toc/53257 , accessed on April 19, 2024.
United States. Bureau of the Census. "NBER Short List," in United States. Bureau of the Census. "March 1974," Business Conditions Digest (March 1974) : 45-48. https://fraser.stlouisfed.org/title/43/item/7331/toc/53257 , accessed on April 19, 2024.