Showing 1 - 3 results of 3 for search 'Christensen, Carl Frederik Albert 1872-1942', query time: 0.01s Refine Results
1
A monograph of the genus dryopteris /
Book
2
Index filicum : sive, enumeratio omnium generum specierumque Filicum et Hydropteridum ab anno 1753 ad finem anni 1905 descriptorium : adjectis, synonymis principalibus, area geographica, etc. /
Book
3
A revision of the Pteridophyta of Samoa /
Book
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