@article{195551,
      recid = {195551},
      author = {Koehler, J. R. and Tadolini, Stephen C.},
      title = {Practical design methods for barrier pillars [microform]  /},
      publisher = {U.S. Dept. of the Interior, Bureau of Mines,},
      address = {[Washington, D.C.?] :},
      pages = {19 p. :},
      year = {1995},
      note = {Distributed to depository libraries in microfiche.},
      url = {http://library.usi.edu/record/195551},
}