@article{11954,
      recid = {11954},
      author = {Curth, Ernest A.},
      title = {Safety aspects of longwall mining in the Illinois coal  basin /},
      publisher = {Dept. of the Interior, Bureau of Mines,},
      address = {[Washington] :},
      pages = {[2], ii, 37 p. :},
      year = {1978},
      url = {http://library.usi.edu/record/11954},
}