http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Annual report of the Mining Division, fiscal year 1941
Technical Report Archive and Image Library (TRAIL)
1 online resource (66 unnumbered pages) : illustrations.
At head of title: United States Department of the Interior, Bureau of Mines.
Report of investigations (United States. Bureau of Mines) ; 3596