United States. Bureau of the Census. "Foreign Trade," in United States. Bureau of the Census. "March 1983," Business Conditions Digest (March 1983) : 88-88. https://fraser.stlouisfed.org/title/43/item/7439/toc/212560 , accessed on April 25, 2024.
United States. Bureau of the Census. "Foreign Trade," in United States. Bureau of the Census. "March 1983," Business Conditions Digest (March 1983) : 88-88. https://fraser.stlouisfed.org/title/43/item/7439/toc/212560 , accessed on April 25, 2024.