A gravity survey of extreme southeastern Illinois
By: [by] Paul C. Heigold.
Series: Illinois. State Geological Survey. Circular; 450; Circular (Illinois State Geological Survey) ;; 450.
Publisher: Illinois State Geological Survey
Published: 1970
Place of publication: Urbana
Language: eng
Number of pages: 12
Subjects: Gravity -- Illinois
Notes: Bibliography: p. 11-12.
Cover title.