Rees, Richard D. "U. S. Foreign Agricultural Trade in the 1970's : Growth or Contraction?," in Federal Reserve Bank of Kansas City. "September-October 1969," Economic Review (Federal Reserve Bank of Kansas City) (September-October 1969) : 11-19. https://fraser.stlouisfed.org/title/7030/item/630995/toc/643296 , accessed on May 18, 2024.