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Exhibitions
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1973
(x)
Newburg (Iowa)
(x)
1975
(x)
(x)
Fenster, Kathryn (author)
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Event Program
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Pensylvanian, Upper Carboniferous Francis Creek Shale
(x)
Mazon Creek, Grundy Co., Ill., Coal Measures
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Search results
Search results
(1 - 4 of 4)
Title
Neuropteris
PID
grinnell:17028
Title
Neuropteris
PID
grinnell:17029
Title
Pecopteris
PID
grinnell:17049
Title
Pecopteris
PID
grinnell:17048