@article{136184,
      recid = {136184},
      author = {Elmer, Steven L.},
      title = {Soil survey of Mercer County, Illinois /},
      publisher = {The Service,},
      address = {[Washington, D.C.?] :},
      pages = {ix, 206 p., [3], 83 folded p. of plates :},
      year = {1991},
      note = {Cover title.},
      url = {http://library.usi.edu/record/136184},
}