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Pennsylvanian tree fern compressions Caulopteris, Megaphyton, and Artisophyton gen. nov. in Illinois

Author: Hermann W Pfefferkorn; Illinois. Department of Registration and Education.; Illinois State Geological Survey.
Publisher: Urbana : Illinois State Geological Survey, 1976.
Series: Circular (Illinois State Geological Survey), 492.
Edition/Format:   Book : State or province government publication : EnglishView all editions and formats
Database:WorldCat
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Additional Physical Format: Online version:
Pfefferkorn, Hermann W.
Pennsylvanian tree fern compressions Caulopteris, Megaphyton, and Artisophyton gen. nov. in Illinois.
Urbana : Illinois State Geological Survey, 1976
(OCoLC)872169151
Material Type: Government publication, State or province government publication
Document Type: Book
All Authors / Contributors: Hermann W Pfefferkorn; Illinois. Department of Registration and Education.; Illinois State Geological Survey.
OCLC Number: 2154852
Notes: Cover title.
At head of title: State of Illinois. Department of Registration and Education.
Description: 31 p. : ill. ; 26 cm.
Series Title: Circular (Illinois State Geological Survey), 492.
Other Titles: Pennsylvanian tree fern compressions
Responsibility: Hermann W. Pfefferkorn.

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