http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Evaluation of potential noise exposures in hospital operating rooms
National Institute for Occupational Safety and Health
1 online resource (iv, 13 pages) : color illustrations.
NIOSH health hazard evaluation report ; HETA 2008-0231-3105