@article{8676,
      recid = {8676},
      author = {Lowenstam, Heinz Adolf,},
      title = {The Niagaran reefs in Illinois and their relation to oil  accumulation /},
      publisher = {Illinois State Geological Survey,},
      address = {Urbana :},
      pages = {36 p. :},
      year = {1949},
      url = {http://library.usi.edu/record/8676},
}