@article{20973,
      note = {28 lessons.},
      author = {Barr, Myer B. and Storm, Paul J.},
      url = {http://library.usi.edu/record/20973},
      title = {Studies in diamontology : a text on the mining, sorting,  processing and evaluation of diamonds /},
      publisher = {The Bryn-Mawr Press,},
      recid = {20973},
      pages = {260 p. in various pagings :},
      address = {Philadelphia :},
      year = {1953},
}