Board of Governors of the Federal Reserve System (U.S.), 1935-. "Market Groupings, Not Seasonally Adjusted," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "March 13, 1984," G.12.3 Industrial Production (1984-03-13) : 4-4. https://fraser.stlouisfed.org/title/55/item/59677/toc/472785 , accessed on April 26, 2024.