Papers presented at the Quarter centennial celebration of the Illinois State Geological Survey
Series: Bulletin -- no. 60; Bulletin (Illinois State Geological Survey) -- no. 60.
Publisher: State Geological Survey
Published: 1931
Place of publication: Urbana, Ill
Language: eng
Number of pages: 300
Subjects: Coal; Geological surveys; Illinois State Geological Survey; History
Other titles: Quarter centennial celebration of the Illinois State Geological Survey