Illinois State Academy of Science geology field trip, guide leaflet :
Springfield area : Springfield County : Springfield and Divernon Quadrangles /
Leader George M. Wilson.
Description
Viewability
Item Link | Original Source |
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Full view Illinois State Geological Survey Fieldtrip Guidebook No. 1956 Springfield | University of Illinois at Urbana-Champaign |
Full view 1956C | University of Illinois at Urbana-Champaign |