1.
図書 |
U.S. Department of Labor, Bureau of Labor Statistics
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2.
図書 |
United States. Bureau of Labor Statistics
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3.
図書 |
U. S. Bureau of Labor Statistics
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4.
図書 |
United States. Bureau of Labor Statistics
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5.
図書 |
[prepared by Daniel F. Callahan and Charles F. Sharkey]
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6.
図書 |
United States. Bureau of Labor Statistics
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7.
図書 |
United States. Bureau of Labor Statistics
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8.
図書 |
United States. Bureau of Labor Statistics ; Clark, Lindley D.
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9.
図書 |
[by Lindley D. Clark]
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10.
図書 |
United States. Bureau of Labor Statistics
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