Board of Governors of the Federal Reserve System (U.S.), 1935-. "Nonfarm Business Expenditures on New Plant and Equipment," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "1992," Annual Statistical Digest (December 1993) : 94-94. https://fraser.stlouisfed.org/title/7/item/23498/toc/332857 , accessed on March 28, 2024.