New ferns from the northern Andes
Maxon, William R. (William Ralph), 1877-1948
Article
1947
Contributions from the Gray Herbarium of Harvard University
Issue: 165
69--75
Harvard University Botany Libraries
English
[Cambridge, Mass.] Harvard University -1984]
DOI: https://doi.org/10.5962/p.336341 Wikidata: https://www.wikidata.org/entity/Q94389318