American Fern Society
Robert T. Clausen, Elsie G. Whitney, Henry K. Svenson, Walter S. Allen, Frederick L. Fagley and W. L. DixVolume:
33
Language:
english
Journal:
American Fern Journal
DOI:
10.2307/1545328
Date:
April, 1943
File:
PDF, 629 KB
english, 1943