The Gravity field and tectonics of Illinois
By: L. D. McGinnis ... [et al.].
Contributors: McGinnis, Lyle David.; Illinois. Dept. of Registration and Education.
Series: Circular - Illinois State Geological Survey ; 494; Circular (Illinois State Geological Survey) ;; 494.
Publisher: Illinois State Geological Survey
Published: 1976
Place of publication: Urbana
Language: eng
Number of pages: 28
Subjects: Gravity -- Illinois.; Geology -- Illinois.
Notes: Bibliography: p. 25-28.
Cover title.
At head of title: State of Illinois, Department of Registration and Education.