Abbott, Maxine Langford.

Lycopsid stems and roots and sphenopsid fructifications and stems from the upper Freeport coal of southeastern Ohio, by Maxine L. Abbott. - Ithaca, N.Y., Paleontological Research Institution, 1968. - 49 p. illus. 31 cm. - Palaeontographica Americana, v. 6, no. 38 .

Bibliography: p. 23-25.

gs 68000130 //r93


Paleobotany--Pennsylvanian.
Plants, Fossil--Ohio.

QE701 QE971 / .I82 v. 6, no. 38