An aeromagnetic survey of southwestern Illinois
By: Paul C. Heigold.
Contributors: Illinois. Dept. of Registration and Education.
Series: Circular - Illinois State Geological Survey ; 495; Circular (Illinois State Geological Survey) ;; 495.
Publisher: Illinois State Geological Survey
Published: 1976
Place of publication: Urbana
Language: eng
Number of pages: 28
Subjects: Geomagnetism -- Illinois.
Notes: Bibliography: p. 25-28.
Cover title.
At head of title: State of Illinois, Department of Registration and Education.