@article{23702,
      recid = {23702},
      author = {Gimpel, Jean.},
      title = {The medieval machine : the industrial revolution of the  Middle Ages /},
      publisher = {Holt, Rinehart and Winston,},
      address = {New York :},
      pages = {xi, 274 p. :},
      year = {1976},
      note = {Includes bibliographical references and index.},
      url = {http://library.usi.edu/record/23702},
}