[035-52]Subsurface Stratigraphic Sections near Type Chester Localities in Southwestern Illinois
Tippie, Frank E. Subsurface Stratigraphic Sections near Type Chester Localities in Southwestern Illinois 035-52-print
[036-39]Insoluble Residues of the Levias and Renault Formations of Hardin County, Illinois
Tippie, Frank E. Insoluble Residues of the Levias and Renault Formations of Hardin County, Illinois 036-39-print