@article{168671,
      author = {Keefer, Donald A.},
      url = {http://library.usi.edu/record/168671},
      title = {Potential for agricultural chemical contamination of  aquifers in Illinois : 1995 revision /},
      publisher = {Illinois State Geological Survey,},
      recid = {168671},
      pages = {28 p. :},
      address = {Champaign, IL :},
      year = {1995},
}