[030-095] Studies on the Lymnaeid Snail, Fossaria Parma (Lea). Part II: Seasonal Life History
Studies on the Lymnaeid Snail Fossaria Parma (Lea) Part II: Seasonal Life History Author, Hoff, C. Clayton
[030-094] A Key To the Adult Salamanders of Illinois
A Key To the Adult Salamanders of Illinois Author, Goodnight, Clarence J.
[030-093] A Scientific Experiment to Increase the Bluebird Population
A Scientific Experiment to Increase the Bluebird Population Author: Evers, Robert A.
[030-092] The Changing Status of Birds as Regards The Abundance
The Changing Status of Birds as Regards The Abundance Author: Elfrig, C.W.G.
[030-091] The Migration and Distribution of the Great Blue Heron (Ardea Herodias Herodias) [sic] in Illinois
The Migration and Distribution of the Great Blue Heron (Ardea Herodias Herodias) [sic] in Illinois Author: Angus, H.L.