@article{29631,
      author = {Bedini, Silvio A.},
      url = {http://library.usi.edu/record/29631},
      title = {Early American scientific instruments and their makers},
      publisher = {Museum of History and Technology,},
      recid = {29631},
      pages = {xii, 184 p.},
      address = {Washington,},
      year = {1964},
}