http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Special equipment in the coal-hydrogenation demonstration plant
1 online resource (136 unnumbered pages) : illustrations.
At head of title: United States Department of the Interior, Bureau of Mines.
Report of investigations (United States. Bureau of Mines) ; 4584