United States. Bureau of the Census. "Title Page," in United States. Bureau of the Census. "February 1973," Business Conditions Digest (February 1973) : 2-2. https://fraser.stlouisfed.org/title/43/item/7318/toc/394639 , accessed on April 19, 2024.
United States. Bureau of the Census. "Title Page," in United States. Bureau of the Census. "February 1973," Business Conditions Digest (February 1973) : 2-2. https://fraser.stlouisfed.org/title/43/item/7318/toc/394639 , accessed on April 19, 2024.