Training materials
Authors: Peter van Heusden
and Contributors: Bérénice Batut or Eija Korpelainen @eija, ekorpelainen@gmail.com or Hadley Wickham or James Johnson or Janick Mathys
Authors: Peter van Heusden
and Contributors: Bérénice Batut or Eija Korpelainen @eija, ekorpelainen@gmail.com or Hadley Wickham or James Johnson or Janick Mathys