@article{101630,
      author = {Darst, Paul W.},
      url = {http://library.usi.edu/record/101630},
      title = {Systematic observation instrumentation for physical  education /},
      publisher = {Leisure Press,},
      recid = {101630},
      pages = {352 p. :},
      address = {West Point, NY :},
      year = {1983},
}