On the movements of petals ... - Hensel, Esther Pearl ([Lincoln, Nebr.?], 1905)
University studies, vol. v, no. 3, July 1905.
Double pagination.
cover-title.
Thesis (PH. D.)--University of Nebraska.
"Bibliography": p. 37-38.
Mode of access: Internet.
Keywords: Plants -- Irritability and movements; Flowers