http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Minerals health and safety in-house and contract research, development, and demonstration in fiscal year 1982
Division of Minerals Health and Safety Technology.
by Staff, Division of Minerals Health and Safety Technology.
Information circular (United States. Bureau of Mines) ; 8872