United States. Bureau of the Census. "Cover Page," in United States. Bureau of the Census. "January 1979," Business Conditions Digest (January 1979) : 1-1. https://fraser.stlouisfed.org/title/43/item/7389/toc/123832 , accessed on May 8, 2024.
United States. Bureau of the Census. "Cover Page," in United States. Bureau of the Census. "January 1979," Business Conditions Digest (January 1979) : 1-1. https://fraser.stlouisfed.org/title/43/item/7389/toc/123832 , accessed on May 8, 2024.