Labor force by industry

Business, or Farming, prepared for Printers Ink Monthly, Dec. 13, 1946. Colored. 11 X 16 in. U. S., eastern part 1 9,500,000, western part 1 12,500,000. Counties are colored to indicate whether the greatest number is employed by industry, by business or by farming. Derived from analysis of labor force by industry classifications (Bureau of the Census). 

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