United States. Bureau of the Census. "Title Page," in United States. Bureau of the Census. "January 1988," Business Conditions Digest (January 1988) : 2-2. https://fraser.stlouisfed.org/title/43/item/7497/toc/379226 , accessed on April 26, 2024.
United States. Bureau of the Census. "Title Page," in United States. Bureau of the Census. "January 1988," Business Conditions Digest (January 1988) : 2-2. https://fraser.stlouisfed.org/title/43/item/7497/toc/379226 , accessed on April 26, 2024.