Ferns of the Wissahickon Valley
Jellett, Edwin C. (Edwin Costley), 1860-1929
Article
1915
American fern journal
5
87--91
BioStor
English
[Washington, etc.] American Fern Society
BioStor: https://biostor.org/reference/218084 DOI: https://doi.org/10.2307/1544103