United States. Bureau of the Census. "Foreign Trade," in United States. Bureau of the Census. "October 1978," Business Conditions Digest (October 1978) : 50-50. https://fraser.stlouisfed.org/title/43/item/7386/toc/60370 , accessed on April 26, 2024.
United States. Bureau of the Census. "Foreign Trade," in United States. Bureau of the Census. "October 1978," Business Conditions Digest (October 1978) : 50-50. https://fraser.stlouisfed.org/title/43/item/7386/toc/60370 , accessed on April 26, 2024.