United States. Bureau of Economic Analysis. "U.S. Plant and Equipment Expenditures by Business : Business Foresees Small Gain in 1971 Capital Outlays, SEC 2491,"
Bureau of Economic Analysis (BEA) News Releases
(December 31, 1970).
https://fraser.stlouisfed.org/title/6148/item/595103, accessed on May 9, 2025.