@article{20592,
      author = {Busch, Willis L.},
      url = {http://library.usi.edu/record/20592},
      title = {Mineral production in Illinois in 1959 /},
      publisher = {Illinois State Geological Survey,},
      recid = {20592},
      pages = {36 p. :},
      address = {Urbana :},
      year = {1960},
}