Proceedings of the 23rd Forum on the Geology of Industrial Minerals
Subtitle: May 11-15, 1987, North Aurora, Illinois
By: Randall E. Hughes and James C. Bradbury, editors.
Contributors: Hughes, Randall E.; Bradbury, James C.; Illinois State Geological Survey.
Series: IMN ;; 102; Illinois minerals note ;; 102.
Publisher: Illinois State Geological Survey
Published: 1989
Place of publication: Champaign, IL
Language: eng
Number of pages: 105
Subjects: Industrial minerals -- United States -- Congresses
Notes: Includes bibliographical references.
"December, 1989"--Cover.