United States. Bureau of Labor Statistics. Tomorrow's Manpower Needs: Research Report on Manpower Projection Methods : Bulletin of the United States Bureau of Labor Statistics, No. 1769 , Washington, D.C: For sale by the Supt. of Docs., U.S. Govt. Print. Off., 1973, https://fraser.stlouisfed.org/title/4864, accessed on November 15, 2024.