@article{4834,
      recid = {4834},
      author = {Mason, W. A.},
      title = {Electrical hazards in underground bituminous coal mines /},
      publisher = {Mining Enforcement and Safety Administration,},
      address = {[Washington] :},
      pages = {5 p. :},
      year = {1975},
      url = {http://library.usi.edu/record/4834},
}