http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
NIOSH investigation of 3M model 8000 filtering facepiece respirators as requested by the California Occupational Safety and Health Administration, Division of Occupational Safety and Health
National Institute for Occupational Safety and Health
Division of Occupational Safety and Health,
1 online resource (vi, 16 pages) : color illustrations.
NIOSH health hazard evaluation report ; HETA 2010-0044-3109