Board of Governors of the Federal Reserve System (U.S.), 1935-. "Industrial Production: Industry Groups," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "September 16, 1992," G.17 Industrial Production and Capacity Utilization (1992-09-16) : 6-7. https://fraser.stlouisfed.org/title/77/item/63607/toc/455155 , accessed on June 14, 2024.