http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
U.S. Dept. of the Interior, U.S. Geological Survey
Description based on: Feb. 2000; title from caption (viewed May 21, 2001).
Mode of access: Internet from the USGS web site. Address as of 5/18/01: http://minerals.er.usgs.gov/minerals/pubs/commodity/iron%5Fore/index.html#mis; current access is available via PURL.
Beginning with issue for Jan. 2003, issued in online format only.
Summarized by annual with title: Iron ore (Annual).
Iron ore (United States. Bureau of Mines)