United States. Bureau of the Census. "Cover Page," in United States. Bureau of the Census. "July 1979," Business Conditions Digest (July 1979) : 1-1. https://fraser.stlouisfed.org/title/43/item/7395/toc/235456 , accessed on May 9, 2024.
United States. Bureau of the Census. "Cover Page," in United States. Bureau of the Census. "July 1979," Business Conditions Digest (July 1979) : 1-1. https://fraser.stlouisfed.org/title/43/item/7395/toc/235456 , accessed on May 9, 2024.