@article{263467,
      note = {Cover title.},
      author = {Wilson, S. A.},
      url = {http://library.usi.edu/record/263467},
      title = {Total and extractable selenium in soils from the Lake  Andes- Wagner irrigation area, South Dakota [microform] /},
      publisher = {U.S. Geological Survey,},
      recid = {263467},
      pages = {[2], 23 leaves :},
      address = {[Denver, Colo.] :},
      year = {1990},
}