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Biscalitheca, a New Genus of Pennsylvanian Coenopterids, Based on its Fructification
Sergius H. MamayVolume:
44
Language:
english
Journal:
American Journal of Botany
DOI:
10.2307/2438804
Date:
March, 1957
File:
PDF, 2.90 MB
english, 1957