The Study of Fossil Ferns
Knowlton, Frank Hall, 1860-1926
Article
1911
American fern journal
1
105--110
BioStor
English
[Washington, etc.] American Fern Society
BioStor: https://biostor.org/reference/218049 DOI: https://doi.org/10.2307/1543939
Public domain. The BHL considers that this work is no longer under copyright protection.
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