Luttrell, Clifton B. "Grain Export Quotas : The Short View and the Long," in Federal Reserve Bank of St. Louis. "October 1974," Review (Federal Reserve Bank of St. Louis) (October 1974) : 12-15. https://fraser.stlouisfed.org/title/820/item/24617/toc/500277 , accessed on April 19, 2024.