Training materials
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and Contributors: Andrea Argentini or Bazante Sanders or Björn Grüning or Dr. Simon Tomlinson or John "Scooter" Morris or Jure Dimec or Martin Krzywinski or Mateusz Kuzak or Patricia Palagi or Portada: Enrique Sahagún or Prof. Tom Freeman or Simon Gladman or Wolmar Nyberg Åkerström