[020-35] Pleistocene and Recent History of Alexis Quadrangle and Vicinity
Pleistocene and Recent History of Alexis Quadrangle and Vicinity Author: Wanless, Harold, R.
[021-34] Nebraskan Till in Fulton County, Illinois
Nebraskan Till in Fulton County, Illinois Author: Wanless, Harold R.
[024-50] The Question of a Pennsylvanian Overlap in the Rock Island Region*
The Question of a Pennsylvanian Overlap in the Rock Island Region* Author: Wanless, H.R.
[025-47] The Depositional Basin of the Springfield (No. 5) Coal in Northern Illinois
The Depositional Basin of the Springfield (No. 5) Coal in Northern Illinois Author: Wanless, H.R.
[026-046] Pennsylvanian Rocks of Madison and St. Clair Counties, Illinois
Pennsylvanian Rocks of Madison and St. Clair Counties, Illinois Author: Wanless, H.R.
[031-001] Geological Records of a Rhythmic Nature
Geological Records of a Rhythmic Nature Author: Wanless, Harold R.
[033-064] The Use of Color Slides as an Aid in Geologic Teaching
The Use of Color Slides as an Aid in Geologic Teaching Author: Wanless, Harold R.