@article{110925,
      note = {Cover title.},
      author = {Bristol, Hubert M. and Howard, Richard Henry,},
      url = {http://library.usi.edu/record/110925},
      title = {Paleogeologic map of the sub-Pennsylvanian Chesterian  (upper Mississippian) surface in the Illinois basin},
      publisher = {Illinois State Geological Survey,},
      recid = {110925},
      pages = {14 p.},
      address = {Urbana,},
      year = {1971},
}