http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Mineral resources of the Illinois-Kentucky mining district
1 online resource (iii, 15 pages) : illustrations, maps.
Title from title screen (viewed October 2, 2014).
"Excellent possibilities exist for finding deposits of fluorspar, lead, zinc, silver, cadmium, rare earths, and niobium in Illinois and Kentucky."
Includes bibliographical references (pages 14-15).
Geological Survey professional paper ; 970