[026-017] Conservation of Wild Flowers and Shrubs— A Municipal Duty
Conservation of Wild Flowers and Shrubs— A Municipal Duty Author: Gumbart, L.F.
[028-025] Some Thoughts on Popularizing Botany
Some Thoughts on Popularizing Botany Author: Gumbart, Louis F.
[032-015] Prehistoric Botany
Prehistoric Botany Author: Gumbart, L. F.