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Coal
Géologie
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289
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287
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43
Stratigraphie
40
Coal mines and mining
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by Crowley, Sharon S.
[Denver, Colo.?] : U.S. Dept. of the Interior, Geological Survey : [Books and Open-file Reports Section, distributor], 1988
[Denver, Colo.?] : U.S. Dept. of the Interior, Geological Survey : [Books and Open-file Reports Section, distributor], 1988
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4
5
6
by Landis, Edwin R. (Edwin Robert), 1926-
[Denver, CO] : U.S. Geological Survey, 1989
[Denver, CO] : U.S. Geological Survey, 1989
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7
8
9
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by Moebs, Noel N.
Pgh. [i.e. Pittsburgh] Pa. : U.S. Dept. of the Interior, Bureau of Mines, 1986
Pgh. [i.e. Pittsburgh] Pa. : U.S. Dept. of the Interior, Bureau of Mines, 1986
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Government Document
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11
by Roberts, Laura N. Robinson
Denver, CO : U.S. Dept. of the Interior, U.S. Geological Survey, 1999
Paper version.
Denver, CO : U.S. Dept. of the Interior, U.S. Geological Survey, 1999
Paper version.
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12
13
14
15
by Oman, Charles L.
[Reston, Va.] : [Denver, Colo.] : U.S. Dept. of the Interior, Geological Survey ; [Books and Open-File Reports Section, distributor], 1994
[Reston, Va.] : [Denver, Colo.] : U.S. Dept. of the Interior, Geological Survey ; [Books and Open-File Reports Section, distributor], 1994
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16
17
by Oman, Charles L.
[Reston, Va.?] : [Denver, Colo.] : U.S. Dept. of the Interior, Geological Survey ; [Books and Open-File Reports Section, distributor], 1993
[Reston, Va.?] : [Denver, Colo.] : U.S. Dept. of the Interior, Geological Survey ; [Books and Open-File Reports Section, distributor], 1993
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18
19
by Moebs, Noel N.
[Avondale, Md.] : U.S. Dept. of the Interior, Bureau of Mines, 1984
[Avondale, Md.] : U.S. Dept. of the Interior, Bureau of Mines, 1984
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