United States. Bureau of the Census. "Cover Page," in United States. Bureau of the Census. "October 1988," Business Conditions Digest (October 1988) : 1-1. https://fraser.stlouisfed.org/title/43/item/7506/toc/381346 , accessed on April 17, 2024.
United States. Bureau of the Census. "Cover Page," in United States. Bureau of the Census. "October 1988," Business Conditions Digest (October 1988) : 1-1. https://fraser.stlouisfed.org/title/43/item/7506/toc/381346 , accessed on April 17, 2024.