@article{3942,
      note = {Cover title.},
      author = {Stevenson, D. L.},
      url = {http://library.usi.edu/record/3942},
      title = {The effect of buried Niagaran reefs on overlying strata in  southwestern Illinois},
      publisher = {Illinois State Geological Survey,},
      recid = {3942},
      pages = {22 p.},
      address = {Urbana,},
      year = {1973},
}