Test

From ILSTRAT

Revision as of 20:03, 21 December 2020 by Alan.Myers (talk | contribs)

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Jump to navigation Jump to search

Figure 4-1. Chart showing the development of the Pennsylvanian classification in the Illinois Basin. From the Tri-State Committee (2001). Used courtesy of the Tri-State Committee.

Retrieved from "https://ilstratwiki.web.illinois.edu/index.php?title=Test&oldid=19061"