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Google圖書搜尋
Fluorspar Mining District, Cave-in-Rock and Shawnee National Forest
Christopher J. Schuberth
Everett D. Cashatt
出版
Education Section, Illinois State Museum
, 1979
ISBN
0897920767
9780897920766
URL
http://books.google.com.hk/books?id=dEhsOek9_c8C&hl=&source=gbs_api