http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
1998 update of ambient water quality criteria for ammonia
Title from title screen (viewed on May 14, 2004).
Mode of access: Internet from the EPA web site. Address as of 5/14/2004: http://www.epa.gov/ost/standards/nh3%5frpt.pdf; current access available via PURL.