http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Developed to provide easy access to summary level emissions data based on EPA's National Emission Trends database. Data is stored by tier category and by Standard Industrial Classification (SIC) code at the county, nonattainment area, state, and national levels.
System requirements: IBM compatible PC with 486 processor running at 33 megahertz; 6 megabytes extended memory; Microsoft Windows version 3.0 or later; Video Graphics Array (VGA) monitor; fully operational CD-ROM drive.