Keys to spring plants
By: W. C. Muenscher and L. C. Petry
Contributors: Petry, Loren Clifford, 1887-
Edition: 6th ed
Publisher: Comstock Publishing Associates
Published: 1949
Place of publication: Ithaca, N.Y
Language: eng
Number of pages: 32
Subjects: Botany -- New York (State) -- Tompkins County; Pteridophyta; Gymnosperms
Notes: "For the identification of the Pteridophyta, Gymnospermae and the commoner species of early-flowering Angiospermae found in the vicinity of Ithaca, New York."