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Google圖書搜尋
Geology and Coal Resources of Batan Island, Albay
Oscar Crispin
James Marvin Weller
José F. Vergara
出版
Republic of the Philippines, Department of Agriculture and Natural Resources, Bureau of Mines
, 1955
URL
http://books.google.com.hk/books?id=iLfgAAAAMAAJ&hl=&source=gbs_api