Geology and Coal Resources of the Walsenburg Area, Huerfano County, Colorado Ross B. Johnson Published: 1958 Total Pages: 246 Get eBook
Geology and Mineral Deposits of the Mosheim and Johnson Anticlines, Greene County, Tennessee Arnold Leslie Brokaw Published: 1966 Total Pages: 368 Get eBook
Coal Resources of the Trinidad Coal Field in Huerfano and Las Animas Counties, Colorado Ross B. Johnson Published: 1961 Total Pages: 228 Get eBook
Geology of the Igneous Rocks of the Spanish Peaks Region, Colorado Ross B. Johnson Published: 1968 Total Pages: 60 Get eBook
Bibliography and Index of U.S. Geological Survey Publications Relating to Coal, 1882-1970 Paul Averitt Published: 1972 Total Pages: 184 Get eBook
List of U.S. Geological Survey Geologic and Water-supply Reports and Maps for Colorado Geological Survey (U.S.) Published: 1987 Total Pages: 352 Get eBook
Coal Transportation Practices and Equipment Requirement to 1985 Gary M. Larwood Published: 1976 Total Pages: 574 Get eBook