@article{18844,
      note = {Cover title.},
      author = {Ehrlinger, Henry Phillip, and Bohor, Bruce F., and Finger,  G. C.},
      url = {http://library.usi.edu/record/18844},
      title = {By-product gypsum in Illinois--a new resource? /},
      publisher = {Illinois State Geological Survey,},
      recid = {18844},
      pages = {16 p. :},
      address = {Urbana :},
      year = {1973},
}