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作者 Steven, Thomas A. (Thomas August), 1917-2013.

標題 Geology and fluorspar deposits, Northgate district, Colorado / by Thomas A. Steven.

出版資料 Washington [D.C.] : U.S. G.P.O., 1960.

複本

說明 p. v, 323-422 : ill., maps ; 24 cm.
系列 Contributions to economic geology
Geological Survey bulletin ; 1082-F
Notes "Prepared in cooperation with the Colorado State Geological Survey Board and the Colorado Metal Mining Fund Board."
Four folded col. maps in pocket.
With: Bound With: Zirconium and hafnium in the Southeastern Atlantic States /
Bibliography Includes bibliographical references (p. 417-420) and index.
主題 Geology -- Colorado -- Northgate District.
Fluorspar -- Colorado -- Northgate District.
添加作者 Colorado Geological Survey.
Colorado State Metal Mining Fund.
政府出版物號碼 I 19.3:1082-F