http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Underground metal and nonmetal mine fire protection
proceedings, Bureau of Mines Technology Transfer Seminars, Denver, Colo., Nov. 3, 1981, and St. Louis, Mo., Nov. 6, 1981
Bureau of Mines Technology Transfer Seminar (1981 : Denver, Colo. and St. Louis, Mo.)
Information circular (United States. Bureau of Mines) ; 8865