United States. Bureau of Labor Statistics
, Fleming, Thomas F.
and Oliver, Richard P.
Methodology for Projections of Industry Employment to 1990 : Bulletin of the United States Bureau of Labor Statistics, No. 2036 ,
Washington, D.C:
U.S. Dept. of Labor, Bureau of Labor Statistics,
February 1980, https://fraser.stlouisfed.org/title/4780,
accessed on October 7, 2024.