A field guide to the ferns and their related families of northeastern and central North America
1956
Cobb, Boughton
A handbook of ferns and their related families in the North American continent based on visual identification.
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Библиографическая информация
Издатель Houghton Mifflin | Boston, Houghton Mifflin, 1956
Эту запись предоставил National Agricultural Library