[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.
[019-26] The Areal Geology of Saline County
The Areal Geology of Saline County Author: Cady, Gilbert H.
[019-25] Glacial Geology and Engineering in Illinois
Glacial Geology and Engineering in Illinois Author: Leighton, M.M.
[019-24] The Inter-Relation of Soils and Geology
The Inter-Relation of Soils and Geology Author: Norton, E.A.
[019-23] Comparative Perception fo Physics by Boys and Girls
Comparative Perception fo Physics by Boys and Girls Author: Radcliff, H.H.
[019-22] Element 61*
Element 61* Author: Harris, J. Allen
[019-21] Optimum Reverberation in Auditoriums
Optimum Reverberation in Auditoriums Author: Watson, F.R.