http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Trace metals related to historical iron smelting at Hopewell Furnace National Historical Site, Berks and Chester Counties, Pennsylvania
1 online resource (2 unnumbered pages) : color illustrations, color maps.
Title from title screen (viewed on Sept. 12, 2011).
Includes bibliographical references (page [2]).
Fact sheet (Geological Survey (U.S.)) ; 2011-3101