United States. Bureau of the Census. "Cover Page," in United States. Bureau of the Census. "October 1989," Business Conditions Digest (October 1989) : 1-1. https://fraser.stlouisfed.org/title/43/item/7518/toc/370517 , accessed on April 19, 2024.
United States. Bureau of the Census. "Cover Page," in United States. Bureau of the Census. "October 1989," Business Conditions Digest (October 1989) : 1-1. https://fraser.stlouisfed.org/title/43/item/7518/toc/370517 , accessed on April 19, 2024.