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Glacial Geology of North-central and Western Champaign County, Illinois
ILLINOIS. INSTITUTE OF NATURAL RESOURCES. ILLINOIS STATE GEOLOGICAL SURVEY DIVISION.
Jerry T. Wickham
出版
Illinois State Geological Survey
, 1979
URL
http://books.google.com.hk/books?id=4Z77q20zLSwC&hl=&source=gbs_api