Pennsylvanian flora of Illinois as revealed in coal balls. II.
Reference LSID: urn:lsid:plantfossilnames.org:ref:27
Author: R. Graham
Full citation: Graham, R. (1935): Pennsylvanian flora of Illinois as revealed in coal balls. II. – Botanical Gazette 97(1): 156–168.
Journal: Botanical Gazette
Journal publisher: The University of Chicago Press, Chicago
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