Title: Some addresses and papers presented on the occasion of the dedication of the State Natural Resources Building, November 15, 1940, and the Illinois Mineral Industries Conference, November 14-16, 1940
Subjects: Mines and mineral resources, Mineral industries, Urbana (Ill.)., Congresses, Stratigraphic Geology, Urbana (Ill.). Natural Resources Building
Places: Illinois
Time periods: Devonian