Books by Mark J. Wetzel:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Wetzel, Mark J.: Economic impact of a suspension of Rule 203 as it applies to an unnamed tributary of the Vermilion River, Vermilion County, Illinois (State of Illinois, Institute of Natural Resources, 1980), also by Warren U. Brigham, Dee A. McCormick, and Illinois Institute of Natural Resources (page images at HathiTrust)
Find more by Mark J. Wetzel at your library, or elsewhere.