@article{155094,
      author = {Heigold, Paul C.},
      url = {http://library.usi.edu/record/155094},
      title = {Seismic reflection and seismic refraction surveying in  northeastern Illinois /},
      publisher = {Illinois State Geological Survey,},
      recid = {155094},
      pages = {vi, 52 p. :},
      address = {Champaign, Ill. (615 E. Peabody Dr., Champaign 61820) :},
      year = {1990},
}