Books by Carl Christensen
Revision Of The American Species Of Dryopteris Of The Group Of D. Opposita (1907)
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A Monograph of the Genus Dryopteris Volume pt.1
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Revised List of Hawaiian Pteridophyta
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The American Ferns Of The Group Of Dryopteris Opposita Contained In The U.s. National Museum
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The American Ferns Of The Group Of Dryopteris Opposita Contained In The U.s. National Museum
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Revision Of The American Species Of Dryopteris Of The Group Of D. Opposita (1907)
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Index Filicum, Sive, Enumeratio Omnium Generum Specierumque Filicum Et Hydropteridum AB Anno 1753 Ad Finem Anni 1905 Descriptorium ? Adjectis Synonymis Principalibus, Area Geographica, Etc. /Carl Christensen. Volume Suppl. 1906-12 - Primary Source Edition
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