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-. "Gross National Product in 1972 Dollars," 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-. "December 1978," Economic Indicators (December 1978) : 4-4. https://fraser.stlouisfed.org/title/1/item/344/toc/217864 , accessed on July 17, 2024.