http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Physical desulfurization of fine-size coals on a spiral concentrator
2 unnumbered pages, ii, 18 pages : illustrations ; 27 cm.
by J. E. Zeilinger, Pittsburgh Energy Research Center, ERDA, and A. W. Deurbrouck, Coal Preparation and Analysis Group.
Based on work in cooperation with the Office of Air Programs, Environmental Protection Agency.
Report of investigations (United States. Bureau of Mines) ; 8152 - Bureau of Mines ; 8152