[031-050] Subsurface Stratigraphy of Pennsylvanian Formations Associated with Coal No. 6 in the Region of Centralia, Illinois
Subsurface Stratigraphy of Pennsylvanian Formations Associated with Coal No. 6 in the Region of Centralia, Illinois Author: Prescott, Gordon W.
[031-049] Discovery of Sphalerite and Galena near Milbrook, Kendall County
Discovery of Sphalerite and Galena near Milbrook, Kendall County Author: Payne, J Norman
[031-048] A List of Coal Ball Plants from Calhoun, Richland County
A List of Coal Ball Plants from Calhoun, Richland County Author: Fisher, Mary Celestin and Noe, A.C.
[031-047] Resins and Waxes in Colorado CoalsResins and Waxes in Colorado Coals
Resins and Waxes in Colorado Coals Author: Dapples, E.C.
[031-046] Rotary Drilling in Illinois
Rotary Drilling in Illinois Author: Cobee, George V.