United States. Bureau of the Census. "Foreign Trade," in United States. Bureau of the Census. "August 1989," Business Conditions Digest (August 1989) : 52-52. https://fraser.stlouisfed.org/title/43/item/7516/toc/192179 , accessed on March 28, 2024.
United States. Bureau of the Census. "Foreign Trade," in United States. Bureau of the Census. "August 1989," Business Conditions Digest (August 1989) : 52-52. https://fraser.stlouisfed.org/title/43/item/7516/toc/192179 , accessed on March 28, 2024.