Browse Illinois State Geological Survey (ISGS) by Contributor "Masters, John M."
Now showing items 1-2 of 2
Illinoian and Wisconsinan stratigraphy and environments in northern Illinois : the Altonian revised (Champaign Ill. : Illinois Dept. of Energy and Natural Resources, State Geological Survey Division,, 1985)
Stratigraphy and biostratigraphy of the Mississippian subsystem (carboniferous system) in its type region, the Mississippi River Valley of Illinois, Missouri and Iowa (Champaign, Ill. : Illinois State Geological Survey,, 2005)