United States. Bureau of the Census. "Title Page," in United States. Bureau of the Census. "November 1969," Business Conditions Digest (November 1969) : 2-2. https://fraser.stlouisfed.org/title/43/item/7536/toc/267880 , accessed on May 13, 2024.
United States. Bureau of the Census. "Title Page," in United States. Bureau of the Census. "November 1969," Business Conditions Digest (November 1969) : 2-2. https://fraser.stlouisfed.org/title/43/item/7536/toc/267880 , accessed on May 13, 2024.