A geologic excursion to fluorspar mines in Hardin and Pope Counties, IllinoisJames W. Baxter, James C. Bradbury, Norman C. Hester · First published 1973Open the Tome
Sedimentology of a beach ridge complex and its significance in land-use planningNorman C. Hester · First published 1973Open the Tome
Sand and gravel resources of Sangamon County, IllinoisNorman C. Hester · First published 1970Open the Tome
Sand and gravel resources of Macon County, IllinoisNorman C. Hester · First published 1969Open the Tome
