Studies of tropical American ferns
Contributors: Maxon, William R.
Series: Contributions from Natl. Herbarium, Vol. X, Pt. 7; Contributions from Natl. Herbarium, Vol. XIII, Pt. 1
Publisher: U.S. G.P.O.
Published: 1908
Place of publication: Washington?
Format: Microform
Subjects: Ferns.