http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Title from caption (viewed on July 13, 2001).
Mode of access: Internet in HTML and PDF formats. Address as of 7/13/01: http://erg.usgs.gov/isb/pubs/factsheets/fs03501.pdf ; current access available via PURL.
Fact sheet (Geological Survey (U.S.)) ; FS-01-035