United States. Bureau of the Census. "Cover Page," in United States. Bureau of the Census. "July 1989," Business Conditions Digest (July 1989) : 1-1. https://fraser.stlouisfed.org/title/43/item/7515/toc/331909 , accessed on May 16, 2024.
United States. Bureau of the Census. "Cover Page," in United States. Bureau of the Census. "July 1989," Business Conditions Digest (July 1989) : 1-1. https://fraser.stlouisfed.org/title/43/item/7515/toc/331909 , accessed on May 16, 2024.