@article{184691,
      recid = {184691},
      author = {Pappas, Deno M. and Mark, Christopher.},
      title = {Behavior of simulated longwall gob material [microform] /},
      publisher = {U.S. Dept. of the Interior, Bureau of Mines,},
      address = {Washington, D.C. (810 7th St., N.W., MS#9800, Washington  20241-0001) :},
      pages = {iii, 39 p. :},
      year = {1993},
      note = {Distributed to depository libraries in microfiche.},
      url = {http://library.usi.edu/record/184691},
}