الموضوعات المستخلصة من بحثك.
الموضوعات المستخلصة من بحثك.
Coal mines and mining
404
Mineral industries
232
Coal
193
Charbon
181
Mines
181
Mines and mineral resources
171
Safety measures
163
المزيد ...
1
بواسطة Bottge, Robert G.
Washington, springfield, Va., U.S. Bureau of Mines, NTIS, 1973
Washington, springfield, Va., U.S. Bureau of Mines, NTIS, 1973
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كتاب
2
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
كتاب
3
بواسطة Thompson, J. W.
[Washington, D.C.] : [U.S. Dept. of Interior, Bureau of Mines], 1919
[Washington, D.C.] : [U.S. Dept. of Interior, Bureau of Mines], 1919
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وثيقة رسمية
كتاب
4
بواسطة Fieldner, Arno Carl, 1881-1966
Washington, U.S. Govt. Print. Off., 1935
Washington, U.S. Govt. Print. Off., 1935
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وثيقة رسمية
كتاب
5
بواسطة Ladoo, Raymond B. (Raymond Bardeen), 1893-
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
كتاب
6
بواسطة Schehl, Richard R.
[Washington] : U.S. Dept. of the Interior, 1973
[Washington] : U.S. Dept. of the Interior, 1973
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وثيقة رسمية
كتاب
7
بواسطة Fieldner, Arno Carl, 1881-1966
Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1919
Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1919
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وثيقة رسمية
كتاب
8
بواسطة Wade, Gustav, 1885-
[Washington, D.C.] : U.S. Dept. of the Interior, Bureau of Mines, 1942
[Washington, D.C.] : U.S. Dept. of the Interior, Bureau of Mines, 1942
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وثيقة رسمية
كتاب
9
10
بواسطة Bennington, K. O.
Pgh. [i.e. Pittsburgh], Pa. : U.S. Dept. of the Interior, Bureau of Mines, 1981
Pgh. [i.e. Pittsburgh], Pa. : U.S. Dept. of the Interior, Bureau of Mines, 1981
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وثيقة رسمية
كتاب
11
بواسطة Fieldner, Arno Carl, 1881-1966
Washington : U.S. G.P.O., 1938
Washington : U.S. G.P.O., 1938
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وثيقة رسمية
كتاب
12
بواسطة Kissell, Fred N.
Pittsburgh, Pa. : U.S. Dept. of the Interior, Bureau of Mines, 1975
Pittsburgh, Pa. : U.S. Dept. of the Interior, Bureau of Mines, 1975
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وثيقة رسمية
كتاب
13
بواسطة Fieldner, Arno Carl, 1881-1966
Washington, U.S. Govt. Print. Off., 1932
Washington, U.S. Govt. Print. Off., 1932
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كتاب
14
Washington : U.S. Govt. Print. Off., 1955
Rev.
Rev.
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كتاب
15
بواسطة Katz, S. H. (Sidney Hershberg), 1884-
Washington : U.S. G.P.O., 1928
Washington : U.S. G.P.O., 1928
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كتاب
16
بواسطة Austin, S. Ralph
[Washington] : Dept. of Interior, Bureau of Mines, 1979
[Washington] : Dept. of Interior, Bureau of Mines, 1979
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كتاب
17
بواسطة Leaf, C Gordon
[Harrisburg] : Commonwealth of Pennsylvania, Dept. of Environmental Resources, Bureau of Topgraphic and Geologic Survey; [Washington for sale by Supt. of Docs., U.S. Govt. Print. Off.], 1971
[Harrisburg] : Commonwealth of Pennsylvania, Dept. of Environmental Resources, Bureau of Topgraphic and Geologic Survey; [Washington for sale by Supt. of Docs., U.S. Govt. Print. Off.], 1971
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كتاب
18
بواسطة Ashmead, Dever C. (Dever Campbell), 1884-
[Harrisburg] : Dept. of Forests and Waters, Topographic and Geologic Survey 1926
[Harrisburg] : Dept. of Forests and Waters, Topographic and Geologic Survey 1926
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كتاب
19
20
بواسطة Elder, C. H. (Curtis H.)
[Washington] : Dept. of the Interior, Bureau of Mines, 1977
[Washington] : Dept. of the Interior, Bureau of Mines, 1977
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وثيقة رسمية
كتاب