Council of Economic Advisers (U.S.) , United States. Congress. Joint Committee on the Economic Report, 1946-1956 and United States. Congress. Joint Economic Committee, 1956-. "Expenditures for New Plant and Equipment," in Council of Economic Advisers (U.S.) , United States. Congress. Joint Committee on the Economic Report, 1946-1956 and United States. Congress. Joint Economic Committee, 1956-. "September 1968," Economic Indicators (September 1968) : 11-11. https://fraser.stlouisfed.org/title/1/item/2/toc/264197 , accessed on April 17, 2024.