@article{240797,
      note = {Cover title.},
      author = {Erdman, James A. and Smith, K. S.},
      url = {http://library.usi.edu/record/240797},
      title = {Impact of the Summitville Mine on irrigation water,  agricultural soils, and alfalfa in the southwestern San  Luis Valley, Colorado [microform] /},
      publisher = {U.S. Geological Survey,},
      recid = {240797},
      pages = {4 leaves ;},
      address = {Denver, CO :},
      year = {1993},
}