Training materials
Authors: Hadley Wickham
and Contributors: Dr. Scooter Morris or Hadley Wickham or Jure Dimec or Michael Ball or Mr. William Edward Hill or Niclas Jareborg or Vicky Schneider
Authors: Hadley Wickham
and Contributors: Dr. Scooter Morris or Hadley Wickham or Jure Dimec or Michael Ball or Mr. William Edward Hill or Niclas Jareborg or Vicky Schneider