@article{64787,
      author = {Orr, Robert William.},
      url = {http://library.usi.edu/record/64787},
      title = {Conodonts from Middle Devonian strata of the Michigan  basin,},
      publisher = {Geological Survey,},
      recid = {64787},
      pages = {110 p.},
      address = {Bloomington, Ind.,},
      year = {1971},
}