http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Clean diesel program for locomotives and marine engines
Office of Transportation and Air Quality,
United States Environmental Protection Agency, Office of Transportation and Air Quality.
Title from PDF title page (viewed July 13, 2015).
Regulatory announcement (United States. Environmental Protection Agency. Office of Transportation and Air Quality)