United States. Bureau of Labor Statistics. Impaired Workers in Industry: The Comparative Performance of Impaired Workers and Their Able-Bodied Fellow Workers : Bulletin of the United States Bureau of Labor Statistics, No. 857 , Washington, D.C.: [For sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1946, https://fraser.stlouisfed.org/title/4322, accessed on February 13, 2025.