http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Source test data system (SOTDAT) coding manual
1 online resource (171 unnumbered page) : illustrations
Report number assigned by National Service Center for Environmental Publications (NSCEP); 400R79001.
"Prepared for National Air Data Branch, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina."