A critical review of the upper Pennsylvanian floras of eastern United States with notes on the Mazon Creek flora of Illinois
By: [by] William C. Darrah.
Published: 1969
Place of publication: [n.p
Language: eng
Number of pages: 220
Subjects: Paleobotany -- Pennsylvanian.; Paleobotany -- United States.
Other titles: Upper Pennsylvanian floras of North America.
Notes: Bibliography: p. 189-203.
Title on spine: Upper Pennsylvanian floras of North America.
500 numbered copies. No. 4.