United States. Bureau of the Census. "Cover Page," in United States. Bureau of the Census. "February 1979," Business Conditions Digest (February 1979) : 1-1. https://fraser.stlouisfed.org/title/43/item/7390/toc/215448 , accessed on April 25, 2024.
United States. Bureau of the Census. "Cover Page," in United States. Bureau of the Census. "February 1979," Business Conditions Digest (February 1979) : 1-1. https://fraser.stlouisfed.org/title/43/item/7390/toc/215448 , accessed on April 25, 2024.