Earth science field trip guide leaflet :
Thebes area : Alexander County : Thebes and Jonesboro Quadrangles.
APA Citation
Illinois State Geological Survey. (1956). Earth science field trip guide leaflet: Thebes area : Alexander County : Thebes and Jonesboro Quadrangles. Urbana, Ill.: State of Illinois, Dept. of Registration and Education, State Geological Survey.
MLA Citation
Illinois State Geological Survey. Earth Science Field Trip Guide Leaflet: Thebes Area : Alexander County : Thebes And Jonesboro Quadrangles. Urbana, Ill.: State of Illinois, Dept. of Registration and Education, State Geological Survey, 1956.
Warning: These citations may not always be complete (especially for serials).