[030-097] Hybrid Crosses in Sunfishes
Hybrid Crosses in Sunfishes Author: Luce, Wilbur M.
[030-101] Another Occurrence of a Fresh Water Medusa
Another Occurrence of a Fresh Water Medusa Author: Steagall, Mary M.
[030-100] Derbid Field-Days
Derbid Field-Days Author: Spooner, C.S.
[030-099] A Suggested Change in High School Laboratory Time
A Suggested Change in High School Laboratory Time Author: Reilly, Sister Mary Fabian
[030-098] Notes on Ectoparasitic Trematides of Fishes
Notes on Ectoparasitic Trematides of Fishes Author: Mixelle, John D*
[030-096] Lapland Longspurs in Illinois in the Early Spring of 1937
Lapland Longspurs in Illinois in the Early Spring of 1937 Author: Hudelson, C.W.
[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.