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الموضوعات المستخلصة من بحثك.
Coal mines and mining
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2,715
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2,671
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1,324
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981
المزيد ...
1
[Washington, D.C. : U.S. G.P.O., 2010
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وثيقة رسمية
كتاب
2
3
بواسطة Puglio, D. G. (Donald G.)
Washington : U.S. Dept. of the Interior, Bureau of Mines, 1979
Washington : U.S. Dept. of the Interior, Bureau of Mines, 1979
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وثيقة رسمية
كتاب
4
بواسطة Adams, W. W. (William Waugh), 1884-1945
Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1920
Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1920
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وثيقة رسمية
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5
6
بواسطة Hills, John M.
[Harrisburg] : Topographic and Geologic Survey, 1931
[Harrisburg] : Topographic and Geologic Survey, 1931
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كتاب
7
8
بواسطة Paul, J. W.
[Washington, D.C.] : U.S. Dept. of Commerce, Bureau of Mines, 1931
[Washington, D.C.] : U.S. Dept. of Commerce, Bureau of Mines, 1931
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وثيقة رسمية
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9
بواسطة Wade, Lewis V.
[Washington, DC] : U.S. Dept. of the Interior, Bureau of Mines, 1974
[Washington, DC] : U.S. Dept. of the Interior, Bureau of Mines, 1974
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وثيقة رسمية
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10
11
بواسطة Greenwald, H. P. (Harold Putnam), 1893-
Washington, D.C. : U.S. Department of the Interior, Bureau of Mines, 1939
Washington, D.C. : U.S. Department of the Interior, Bureau of Mines, 1939
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وثيقة رسمية
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12
13
بواسطة Sisler, James D. (James Donaldson), 1894-
[Harrisburg, Pa.] : Commonwealth of Pennsylvania, Department of Internal Affairs, Bureau of Topographic and Geological Survey, 1924
[Harrisburg, Pa.] : Commonwealth of Pennsylvania, Department of Internal Affairs, Bureau of Topographic and Geological Survey, 1924
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وثيقة رسمية
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14
Arlington, Va. : U.S. Dept. of Labor, Mine Safety and Health Administration, 2011
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وثيقة رسمية
كتاب
15
Washington : U.S. G.P.O., 2013
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وثيقة رسمية
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16
17
18
بواسطة Adams, W. W. (William Waugh), 1884-1945
Washington, D.C. : Dept. of Commerce, U.S. Bureau of Mines, 1931
Washington, D.C. : Dept. of Commerce, U.S. Bureau of Mines, 1931
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وثيقة رسمية
كتاب
19
بواسطة Toenges, Albert L. (Albert Louis), 1889-
Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1947
Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1947
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وثيقة رسمية
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20
[Washington] : The Survey, 1977
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كتاب