http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Office of Transportation and Air Quality.
1 online resource (8 pages) : color illustration
Assessment and Standards Division, Office of Transportation and Air Quality, U.S. Environmental Protection Agency.
Title from PDF title screen (viewed on July 3, 2018).
Includes bibliographical references (page 5).