@article{226561,
      recid = {226561},
      author = {Hayes, Philip T. and Cone, George C.,},
      title = {Cambrian and Ordovician rocks of southern Arizona and New  Mexico and westernmost Texas /},
      publisher = {U.S. Govt. Print. Off.,},
      address = {Washington :},
      pages = {iv, 98 p. :},
      year = {1975},
      note = {Includes index.},
      url = {http://library.usi.edu/record/226561},
}