@article{258041,
      recid = {258041},
      author = {Campbell, David L. and Horton, Robert J. and Beanland,  Shay.},
      title = {Geoelectrical laboratory measurements of materials from  the May Day Mine dump, southwestern Colorado [microform] /},
      publisher = {U.S. Dept. of the Interior, U.S. Geological Survey,},
      address = {Denver, Colo. :},
      pages = {26, [1] p. :},
      year = {2000},
      note = {Cover title.},
      url = {http://library.usi.edu/record/258041},
}