Malcolm L. McCallum
Rana sphenocephala (Southern Leopard Frog) Malformities Found in Illinois with Behavioral Notes
Visible Color Effects in a Positive Ray Tube Containing Helium Author: Knipp, Chas T.
The Physical History of the Upper Mississippi Valley During the Late Paleozoic Author: Van Tuyl, Francis M.
The Thebes Sandstone and Orchard Creek Shale and Their Faunas in Illinois Author: Blackwelder, Eliot
Visible Color Effects in a Positive Ray Tube Containing Helium Author: Knipp, Chas T.
The Physical History of the Upper Mississippi Valley During the Late Paleozoic Author: Van Tuyl, Francis M.