United States. Bureau of the Census. "Cover Page," in United States. Bureau of the Census. "October 1979," Business Conditions Digest (October 1979) : 1-1. https://fraser.stlouisfed.org/title/43/item/7398/toc/167796 , accessed on March 29, 2024.
United States. Bureau of the Census. "Cover Page," in United States. Bureau of the Census. "October 1979," Business Conditions Digest (October 1979) : 1-1. https://fraser.stlouisfed.org/title/43/item/7398/toc/167796 , accessed on March 29, 2024.