Indexes of Output Per Man-Hour, Selected Industries, 1939 and 1947-65 : Bulletin of the United States Bureau of Labor Statistics, No. 1537
United States. Bureau of Labor Statistics. "Indexes of Output Per Man-Hour, Selected Industries, 1939 and 1947-65 : Bulletin of the United States Bureau of Labor Statistics, No. 1537," Productivity Measures for Selected Industries (1966). https://fraser.stlouisfed.org/title/4825/item/498287, accessed on April 18, 2024.