1.
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[Washington : G.P.O., 1909]
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2.
|
Washington : Govt. Print. Off, 1907.
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3.
|
Washington : G.P.O., 1889.
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4.
|
Washington : Govt. Print. Off, 1889.
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5.
|
Washington : G.P.O., 1915.
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6.
|
Washington, DC : Department of Labor, Bureau of Labor Statistics
HB225 .U53 |
|
7.
|
[Washington, D.C.?] : Bureau of Labor Statistics, U.S. Dept. of Labor, [1993]
L 2.2: C 76/46 |
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8.
|
[Washington, D.C.?] : U.S. Dept. of Labor, Bureau of Labor Statistics, [1992]
L 2.71/5-2: 92-5 |
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9.
|
[Washington, D.C.?] : U.S. Dept. of Labor, Bureau of Labor Statistics, [1991]
L 2.71/5-2: 92-3 |
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10.
|
[Washington, D.C.?] : U.S. Dept. of Labor, Burea of Labor Statistics, [1991]
L 2.71/5-2: 92-2 |
|