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Google圖書搜尋
The Elephant as They Saw it
California. Division of Mines and Geology
其他書名
A Collection of Contemporary Pictures and Statements on Gold Mining in California
出版
Department of Conservation, Division of Mines and Geology
, 1997
URL
http://books.google.com.hk/books?id=vwytAQAACAAJ&hl=&source=gbs_api