United States. Bureau of the Census. "Foreign Trade," in United States. Bureau of the Census. "August 1986," Business Conditions Digest (August 1986) : 88-88. https://fraser.stlouisfed.org/title/43/item/7480/toc/422745 , accessed on April 24, 2024.
United States. Bureau of the Census. "Foreign Trade," in United States. Bureau of the Census. "August 1986," Business Conditions Digest (August 1986) : 88-88. https://fraser.stlouisfed.org/title/43/item/7480/toc/422745 , accessed on April 24, 2024.