@article{105086,
      author = {Samson, Irma.},
      url = {http://library.usi.edu/record/105086},
      title = {Directory of Illinois stone, sand, and gravel producers,  1985 /},
      publisher = {Illinois State Geological Survey,},
      recid = {105086},
      pages = {161 p. ;},
      address = {Champaign, IL :},
      year = {1985},
}