Indexes of Output Per Man-Hour, Selected Industries, 1973 Edition : Bulletin of the United States Bureau of Labor Statistics, No. 1780
United States. Bureau of Labor Statistics. "Indexes of Output Per Man-Hour, Selected Industries, 1973 Edition : Bulletin of the United States Bureau of Labor Statistics, No. 1780," Productivity Measures for Selected Industries (1973). https://fraser.stlouisfed.org/title/4825/item/499002, accessed on April 25, 2024.