The Ordovician system in the United States
Subtitle: correlation chart and explanatory notes
By: by Reuben J. Ross, Jr. ... [et al.] ; sponsored by the International Subcommission on Ordovician Stratigraphy ; Reuben J. Ross Jr., Stig M. Bergstrom, editors.
Contributors: Ross, Reuben James, 1918-; Bergström, Stig M.; International Union of Geological Sciences. International Subcommission on Ordovician Stratigraphy.
Series: Publication / International Union of Geological Sciences ;; no. 12; IUGS publication ;; no. 12.
Publisher: International Union of Geological Sciences
Published: 1982
Place of publication: [Paris]
Language: eng
Number of pages: 73
Subjects: Geology, Stratigraphic -- Ordovician.; Geology -- United States.; Stratigraphic correlation -- United States.
Notes: Bibliography: p. 53-73.
Cover title.
"July 4, 1982."
Three illustrations on folded sheets in pocket.