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