Board of Governors of the Federal Reserve System (U.S.), 1935-. "Industry Groupings, Seasonally Adjusted," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "January 17, 1979," G.12.3 Industrial Production (1979-01-17) : 5-5. https://fraser.stlouisfed.org/title/55/item/59616/toc/470527 , accessed on April 19, 2024.