@article{531750,
      recid = {531750},
      author = {Martin, Benjamin, and Bradberry, Robert.},
      title = {The principles of perspective, explained in a genuine  theory, and applied in an extensive practice ; with the  construction and uses of all such instruments as are  subservient to the purposes of this science. By Robert  Bradberry. [electronic resource] :},
      publisher = {printed for J. Ainslie, NO. 4, ST Andrews' Street, New  Town,},
      address = {Edinburgh :},
      pages = {83,[1]p.,plates ;},
      year = {1790},
      note = {Earlier editions stated to be by Benjamin Martin.},
      url = {http://library.usi.edu/record/531750},
}