United States. Bureau of the Census. "Foreign Trade," in United States. Bureau of the Census. "August 1976," Business Conditions Digest (August 1976) : 19-19. https://fraser.stlouisfed.org/title/43/item/7360/toc/306919 , accessed on April 27, 2024.
United States. Bureau of the Census. "Foreign Trade," in United States. Bureau of the Census. "August 1976," Business Conditions Digest (August 1976) : 19-19. https://fraser.stlouisfed.org/title/43/item/7360/toc/306919 , accessed on April 27, 2024.