Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Industrial Production - Indexes and Gross Value," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "March 1990," Federal Reserve Bulletin (March 1990) : 132-133. https://fraser.stlouisfed.org/title/62/item/20814/toc/259631 , accessed on April 26, 2024.