@article{64802,
      recid = {64802},
      author = {Twenhhofel, William Henry,},
      title = {Correlation of the Ordovician formations of North America  /},
      publisher = {Geological Society of America,},
      address = {New York :},
      pages = {[53 p.] :},
      year = {1954},
      url = {http://library.usi.edu/record/64802},
}