http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Recovery of lead and sulfur from galena concentrate, using a ferric sulfate leach
by F.P. Haver, K. Uchida, and M.M. Wong.
Includes bibliographical references (page 13).
Report of investigations (United States. Bureau of Mines) ; 7360