United States. Bureau of the Census. "Foreign Trade," in United States. Bureau of the Census. "February 1986," Business Conditions Digest (February 1986) : 88-88. https://fraser.stlouisfed.org/title/43/item/7474/toc/195301 , accessed on May 1, 2024.
United States. Bureau of the Census. "Foreign Trade," in United States. Bureau of the Census. "February 1986," Business Conditions Digest (February 1986) : 88-88. https://fraser.stlouisfed.org/title/43/item/7474/toc/195301 , accessed on May 1, 2024.