http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Low pressure leaching of Duluth complex matte
12 pages : illustrations ; 27 cm. + errata sheet.
by L.A. Haas, R.B. Schluter, and R.H. Nafziger.
Report of investigations (United States. Bureau of Mines) ; 8522