@article{97416,
      note = {Cover title: Underground coal mining symposium.},
      url = {http://library.usi.edu/record/97416},
      title = {Papers presented before the Symposium on Underground  Mining : October 27-29, 1981, Kentucky Fair &  Exposition Center, Louisville, Kentucky /. Symposium on  Underground Mining},
      publisher = {McGraw-Hill,},
      recid = {97416},
      pages = { 341 p. :},
      address = {New York :},
      year = {1981},
}