Lycopsid stems and roots and sphenopsid fructifications and stems from the upper Freeport coal of southeastern Ohio, by Maxine L. Abbott.
Material type:
TextSeries: Palaeontographica Americana ; v. 6, no. 38Publication details: Ithaca, N.Y., Paleontological Research Institution, 1968.Description: 49 p. illus. 31 cmSubject(s): LOC classification: - QE701 .I82 v. 6, no. 38 QE971
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Bibliography: p. 23-25.
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