@article{493551,
      recid = {493551},
      author = {R. K.},
      title = {Observations on the use of spectacles, extracted from the  writings of the most celebrated authors who have wrote on  opticks. Wherein Are contained Rules for chusing of  Spectacles and Glasses, proper for remedying all the  different Defects of Sight. In a letter to a friend.  [electronic resource] :},
      publisher = {printed for P. Stevens, near Stationers-Hall; R. Baldwin,  in Pater-Noster-Row; J. Jefferies, in Ludgate-Street; B.  Bourn, at the Royal-Exchange; G. Woodfall, at  Charing-Cross; R. Williamson, at Liverpool; J. Berry, at  Manchester; W. Eaton, at Yarmouth; J. Teast, at Bristol; J.  Lord, at Wakefield; S. Simmonds, at Sheffield; Messrs  Kincaid and Donaldson, at Edinburgh and J. Smith, at  Dublin,},
      address = {London :},
      pages = {[4],31,[1]p. ;},
      year = {1753},
      note = {Signed: R. K.},
      url = {http://library.usi.edu/record/493551},
}