[019-32] Life in a Coal Measure Mud Rock
Life in a Coal Measure Mud Rock Author: Jeliff, Fred R.
[019-31] The Geological Columnar Section at Monmouth, Illinois, as Revealed by the New Deep Wells
The Geological Columnar Section at Monmouth, Illinois, as Revealed by the New Deep Wells Author: Workman, L.E.
[019-29] Silurian Rocks in Illinois
Silurian Rocks in Illinois Author: Savage, T.E.
[019-28] The Fossil Flora of Harrisburg, Illinois
The Fossil Flora of Harrisburg, Illinois Author: Noe, A.C.
[019-27] Tornadoes of March 18, 1925
Tornadoes of March 18, 1925 Author: Coyer, F.H.