Board of Governors of the Federal Reserve System (U.S.), 1935-. "Output and Capacity for Industrial Materials," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "December 15, 1987," G.3 Capacity Utilization, Manufacturing, Mining, Utilities and Industrial Materials (1987-12-15) : 4-4. https://fraser.stlouisfed.org/title/51/item/56871/toc/448404 , accessed on April 19, 2024.