http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Illinoian and Wisconsinan stratigraphy and environments in northern Illinois
vi, 177 pages : illustrations, maps ; 28 cm.
leaders Richard C. Berg [and others] ; contributors Richard C. Berg [and others].
"Midwest Friends of the Pleistocene, 32nd Field Conference, 1985."
Guidebook (Illinois State Geological Survey) ; 19