Training materials
Authors: Hadley Wickham
and Contributors: Anne Pajon or Célia Michotey or Daniel Blankenberg or Dave Clements or Hadley Wickham or Vitor Sousa
Authors: Hadley Wickham
and Contributors: Anne Pajon or Célia Michotey or Daniel Blankenberg or Dave Clements or Hadley Wickham or Vitor Sousa