United States. Bureau of the Census. "Title Page," in United States. Bureau of the Census. "February 1988," Business Conditions Digest (February 1988) : 2-2. https://fraser.stlouisfed.org/title/43/item/7498/toc/199887 , accessed on June 18, 2024.
United States. Bureau of the Census. "Title Page," in United States. Bureau of the Census. "February 1988," Business Conditions Digest (February 1988) : 2-2. https://fraser.stlouisfed.org/title/43/item/7498/toc/199887 , accessed on June 18, 2024.