http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
USGS research helps the County of Los Angeles address new arsenic standards
Cooperative Water Program (Geological Survey)
Title from title screen (viewed on July 11, 2008).
At head of title: California Water Science Center, Cooperative Water Program.
Mode of access: Internet from the USGS web site. Address as of 7/11/08: http://pubs.usgs.gov/fs/2008/3043/pdf/fs20083043.pdf ; current access available via PURL.
Fact sheet (Geological Survey (U.S.)) ; 2008-3043