[078-01] Unifying the Nomenclature in the Pennsylvanian Systems of the Illinois Basin
R.J. Jacobson, C.B. Trask, C.H. Ault, D.D. Carr, H.H. Cray, W.A. Hasenmeuller, D. Williams, and A.D. Williamson Unifying the Nomenclature in the Pennsylvanian Systems of the Illinois Basin 078-01-print