A seismic refraction survey of the Meredosia Channel area of northwestern Illinois
By: L. D. McGinnis, P. C. Heigold.
Contributors: Heigold, Paul C., joint author.; Illinois. Dept. of Registration and Education.
Series: Circular - Illinois State Geological Survey ; 488; Circular (Illinois State Geological Survey) ;; 488.
Publisher: Illinois State Geological Survey
Published: 1974
Place of publication: Urbana
Language: eng
Number of pages: 19
Subjects: Valleys -- Illinois.; Glacial epoch -- Illinois.; Seismic refraction method.
Notes: Bibliography: p. 16-17.
At head of title: State of Illinois, Dept. of Registration and Education.