@article{184773,
      note = {Distributed to depository libraries in microfiche.},
      author = {Barron, Lance R. and DeMarco, Matthew J.},
      url = {http://library.usi.edu/record/184773},
      title = {Longwall gate road stability in a steeply pitching thick  coal seam with a weak roof [microform] /},
      publisher = {U.S. Dept. of the Interior, Bureau of Mines,},
      recid = {184773},
      pages = {ii, 33 p. :},
      address = {[Washington, D.C.?] :},
      year = {1995},
}