|
Coal Ohio : Bownocker, J. A.
|
1917
|
1
|
|
Coal Oregon Coos Bay : Duncan, Donald C.,
|
1953
|
1
|
|
Coal Pennsylvania History 19th Century : Hoffman, John N.
|
1972
|
1
|
|
Coal Pennsylvania New Kensington : Richardson, G. B.
|
1932
|
1
|
|
Coal Powder River Basin Wyo And Mont Analysis : Luppens, James A.
|
2011
|
1
|
|
Coal Preparation -- See Also Coal washing
|
|
1
|
|
Coal Preparation Congresses : International Coal Preparation Congress
|
2010
|
1
|
|
Coal Pulverized : Miller, C. Andrew.
|
1995
|
1
|
|
Coal Pulverized Combustion : Toporov, Dobrin,
|
2014
|
1
|
|
Coal Purchasing United States : Randall, Dwight T.,
|
1908
|
1
|
|
Coal Research Methodology : Niksa, Stephen.
|
2022
|
1
|
|
Coal Research United States Databases : Deems, Nikolaus J.
|
2012
|
1
|
|
Coal Reserves Colorado Huerfano County : Johnson, Ross B.,
|
1961
|
1
|
|
Coal Reserves Colorado Las Animas County : Johnson, Ross B.,
|
1961
|
1
|
|
Coal Reserves New Zealand : Moore, T. A.
|
2004
|
1
|
|
Coal Reserves Virginia : Milici, Robert C.,
|
1997
|
1
|
|
Coal Rhode Island : Rhode Island.
|
1870
|
1
|