Guide to Pennsylvanian fossil plants of Illinois /
James R. Jennings.
APA Citation
Jennings, J. R. (1990). Guide to Pennsylvanian fossil plants of Illinois. Champaign, IL (615 E. Peabody Dr., Champaign 61820): Illinois State Geological Survey.
MLA Citation
Jennings, James R. Guide to Pennsylvanian Fossil Plants of Illinois. Champaign, IL (615 E. Peabody Dr., Champaign 61820): Illinois State Geological Survey, 1990.
Warning: These citations may not always be complete (especially for serials).