http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Title from title screen (viewed on June 28, 2006).
Mode of access: Internet from the U.S. Census Bureau web site. Address as of 6/28/06: http://www.census.gov/prod/2001pubs/p70-73.pdf ; current access is available via PURL.