[Ferns of the Colombian Expedition of Pennell & Killip]
Pennell, Francis W. (Francis Whittier), 1886-1952 Killip, Ellsworth P. (Ellsworth Paine), 1890-1968 Maxon, William R. (William Ralph), 1877-1948 Weatherby, Charles Alfred, 1875-1949
List
1922
Plant lists : Chile, Colombia, Ecuador, and Peru
Harvard University Botany Libraries
[Approximately 1916-1942]
Public domain. The BHL considers that this work is no longer under copyright protection.
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