A guide to the geology of the Hillsdale area
By: Dwain Berggren
Series: Field trip guide leaflet - Illinois State Geological Survey ; 1980-B; Field trip guide leaflet  (Illinois State Geological Survey) -- 1980B.
Publisher: Illinois State Geological Survey
Published: 1980
Place of publication: Urbana
Language: eng
Number of pages: 24
Subjects: Mines and mineral resources; Geology
Notes: Bibliography: p. 24.