@article{1401797,
      recid = {1401797},
      author = {Bercken, B. J. L van den, and Baan, V. C. P.,},
      title = {Engraved gems : from antiquity to the present /},
      pages = {1 online resource (187 pages) :},
      url = {http://library.usi.edu/record/1401797},
}