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American Fern Society
Robert C. Lommasson, D. G. Huttleston, Richard L. Hauke, Luke S. Albert and Daniel F. BurtonVolume:
53
Language:
english
Journal:
American Fern Journal
DOI:
10.2307/1546809
Date:
April, 1963
File:
PDF, 905 KB
english, 1963