http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
National Water-Quality Assessment (NAWQA) Program
National Water-Quality Assessment Program (U.S.)
System requirements: Adobe Acrobat Reader.
Mode of access: Internet from the NAWQA web site. Address as of 1/25/02: ftp://hqwxftp.er.usgs.gov/pub/NAWQA/bib.pdf; current access is available via PURL.