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-. "May 16, 1994," G.17 Industrial Production and Capacity Utilization (1994-05-16) : 6-7. https://fraser.stlouisfed.org/title/77/item/63627/toc/455500 , accessed on May 12, 2024.