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By "Geological Society of America. Meeting Northern Illinois University) 1985-"
Early Pennsylvanian paleotopography and depositional environments, Rock Island County, Illinois /
By: Leary, Richard L. - Trask, C. Brian. - Geological Society of America.
Publication info: Champaign, Ill. :Illinois State Geological Survey,1985.
Contributed by: University of Illinois Urbana Champaign