@article{289645,
      recid = {289645},
      author = {Gehrig, Jill S. and Gehrig, Jill S.},
      title = {Fundamentals of periodontal instrumentation & advanced  root instrumentation /},
      publisher = {Lippincott Williams & Wilkins,},
      address = {Philadelphia :},
      pages = {xvi, 640 p. :},
      year = {2004},
      note = {Rev. ed. of: Fundamentals of periodontal instrumentation.  4th ed. c2000.},
      url = {http://library.usi.edu/record/289645},
}