@article{519706,
      note = {Drop-head title.},
      url = {http://library.usi.edu/record/519706},
      title = {Mathematical, philosophical, and optical instruments made  and sold by Heath and Wing, near Exeter-Exchange, in the  Strand, London [electronic resource].},
      recid = {519706},
      pages = {14p. ;},
      address = {[London,},
      year = {1765},
}