http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
NIOSH, Health Hazard Evaluation Report, HETA 98-0124-2743, Yankton Sioux Tribe-Marty Indian School, Marty, South Dakota, July 1999
National Institute for Occupational Safety and Health