בתוך החיפוש שלך נושאים מוצעים
בתוך החיפוש שלך נושאים מוצעים
Coal mines and mining
404
Mineral industries
232
Coal
193
Charbon
181
Mines
181
Mines and mineral resources
171
Safety measures
163
יותר ...
1
מאת 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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ספר
2
מאת 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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Government Document
ספר
3
מאת 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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Government Document
ספר
4
מאת Fieldner, Arno Carl, 1881-1966
Washington, U.S. Govt. Print. Off., 1935
Washington, U.S. Govt. Print. Off., 1935
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Government Document
ספר
5
מאת 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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Government Document
ספר
6
מאת Schehl, Richard R.
[Washington] : U.S. Dept. of the Interior, 1973
[Washington] : U.S. Dept. of the Interior, 1973
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Government Document
ספר
7
מאת 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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Government Document
ספר
8
מאת 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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Government Document
ספר
9
10
מאת 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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Government Document
ספר
11
מאת Fieldner, Arno Carl, 1881-1966
Washington : U.S. G.P.O., 1938
Washington : U.S. G.P.O., 1938
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Government Document
ספר
12
מאת 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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Government Document
ספר
13
מאת Fieldner, Arno Carl, 1881-1966
Washington, U.S. Govt. Print. Off., 1932
Washington, U.S. Govt. Print. Off., 1932
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ספר
14
Washington : U.S. Govt. Print. Off., 1955
Rev.
Rev.
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ספר
15
מאת Katz, S. H. (Sidney Hershberg), 1884-
Washington : U.S. G.P.O., 1928
Washington : U.S. G.P.O., 1928
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ספר
16
מאת Austin, S. Ralph
[Washington] : Dept. of Interior, Bureau of Mines, 1979
[Washington] : Dept. of Interior, Bureau of Mines, 1979
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ספר
17
מאת 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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ספר
18
מאת 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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ספר
19
20
מאת 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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Government Document
ספר