http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Injury experience in the nonmetallic mineral industries (except stone and coal), 1970-71
Mining Enforcement and Safety Administration.
by Staff, Branch of Recurring Reports, Health and Safety Analysis Center, Denver, Colo.
Informational report (United States. Mining Enforcement and Safety Administration) ; IR1014