Structure of Herrin (no. 6) Coal Bed in Christian and Montgomery Counties and Adjacent Parts of Fayette, Macon, Sangamon, and Shelby Counties68 páginas3 horas de lecturaNotifícame
Subsurface Geology of the Chester Series in Illinois: Subsurface Geology of the Iowa (lower Mississippian) Series in Illinois; Report of InvestigationNotifícame
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