|
Coal Geology Pennsylvania Butler County : Patterson, E. D.
|
1971
|
1
|
|
Coal Geology Pennsylvania Indiana County : Kertis, Carla A.
|
1985
|
1
|
|
Coal Geology Pennsylvania Schuylkill County : Wood, Gordon H.
|
1962
|
1
|
|
Coal Geology Rhode Island : Ashley, Geo. H.
|
1915
|
1
|
|
Coal Geology United States Data Processing : Roberts, Laura N. Robinson.
|
1999
|
1
|
|
Coal Geology Utah Wasatch Plateau : Spieker, Edmund M.
|
1931
|
1
|
|
Coal Geology Virginia : Kosanke, Robert M.
|
1988
|
1
|
|
Coal Geology Wyoming Rock Springs Region : Roehler, Henry W.
|
1988
|
1
|
|
Coal Government Policy United States Congresses : Future of Coal Conference
|
2005
|
1
|
|
Coal Great Plains Analysis : Zubovic, Peter,
|
1961
|
1
|
|
Coal Gulf Coast Region U S : Karlsen, Alex W.,
|
2002
|
1
|
|
Coal History : Freese, Barbara
|
2003
|
1
|
|
Coal Hydrogenation -- See Coal liquefaction
|
|
1
|
|
Coal Idaho : Schultz, Alfred Reginald,
|
1918
|
1
|
|
Coal Illinois : Zubovic, Peter,
|
1964
|
1
|
|
Coal Indonesia Composition : Belkin, H. E.
|
2007
|
1
|
|
Coal Industry -- See Coal trade
|
|
1
|
|
Coal Industry United States : Rogers William P.
|
1978
|
1
|
|
Coal Kansas Reserves : Kenny, J. F.
|
1983
|
1
|
|
Coal Kentucky Pike County : Hunt, Charles B.
|
1937
|
1
|
|
Coal Leases Environmental Aspects Wyoming : United States.
|
2003
|
1
|
|
Coal Leases Wyoming : United States.
|
2011
|
1
|