Fluorspar in Illinois
By: [by] J. C. Bradbury, G. C. Finger [and] R. L. Major.
Contributors: Finger, G. C. 1905- joint author.; Major, Robert L., joint author.
Series: Illinois. State Geological Survey. Circular; 420; Circular (Illinois State Geological Survey) ;; 420.
Published: 1968
Place of publication: Urbana
Language: eng
Number of pages: 64
Subjects: Fluorspar -- Illinois
Notes: Bibliography: p. 62-64.
Cover title.