Carl Christensen

Carl Frederik Albert Christensen; C.Chr.; C. Christensen

January 16, 1872 – November 24, 1942

botanist, pteridologist, teacher

Danish botanist (1872–1942)

http://www.wikidata.org/entity/Q2114106

https://en.wikipedia.org/wiki/Carl_Christensen_(botanist) [View]

Kingdom of Denmark