A county checklist of the ferns and fern allies of Kansas, Nebraska, South Dakota, and North Dakota
Petrick-Ott, A J
Article
1975
Rhodora
77
478--511
BioStor
[Cambridge, Mass., etc.], New England Botanical Club [etc.],
BioStor: https://biostor.org/reference/138050
In copyright. Digitized with the permission of the rights holder.
https://biodiversitylibrary.org/permissions
http://creativecommons.org/licenses/by-nc-sa/3.0/
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