United States. Bureau of the Census. "Cover Page," in United States. Bureau of the Census. "June 1989," Business Conditions Digest (June 1989) : 1-1. https://fraser.stlouisfed.org/title/43/item/7514/toc/423539 , accessed on May 3, 2024.
United States. Bureau of the Census. "Cover Page," in United States. Bureau of the Census. "June 1989," Business Conditions Digest (June 1989) : 1-1. https://fraser.stlouisfed.org/title/43/item/7514/toc/423539 , accessed on May 3, 2024.