United States. Bureau of the Census. "Industrial Production," in United States. Bureau of the Census. "May 1979," Business Conditions Digest (May 1979) : 100-100. https://fraser.stlouisfed.org/title/43/item/7393/toc/212794 , accessed on May 8, 2024.
United States. Bureau of the Census. "Industrial Production," in United States. Bureau of the Census. "May 1979," Business Conditions Digest (May 1979) : 100-100. https://fraser.stlouisfed.org/title/43/item/7393/toc/212794 , accessed on May 8, 2024.