@article{184737,
      note = {Distributed to depository libraries in microfiche.},
      author = {Jeran, P. W.},
      url = {http://library.usi.edu/record/184737},
      title = {Timing and duration of subsidence due to longwall mining  [microform] /},
      publisher = {U.S. Dept. of the Interior, Bureau of Mines,},
      recid = {184737},
      pages = {17 p. :},
      address = {[Washington, D.C.?] :},
      year = {1995},
}