Champlainian series (Middle Ordovician) in Illinois
By: [by] J. S. Templeton [and] H. B. Willman.
Contributors: Willman, H. B. 1901-
Series: Illinois State Geological Survey. Bulletin -- no. 89; Bulletin (Illinois State Geological Survey) -- no. 89.
Publisher: State Geological Survey
Published: 1963
Place of publication: Urbana
Language: eng
Number of pages: 260
Subjects: Geology, Stratigraphic -- Ordovician; Geology -- Illinois
Notes: Bibliography: p. 241-251.