Ken Roberts - - Ski Backcountry

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2011 : a

 . . Eastside Sierra - Calfornia USA

2010 : a

2009 : b a

2008 : a

2007 : a

2006 : a : b

[ earlier 2006 : later 2006 ]

  • [ to be added ]

2005

  • [ to be added ]

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concept words: ski skiing snow skier skiers skis roberts report reports

backcountry mountaineering randonnee rando off-piste tour tours touring route routes

technique: techniques technical theory theories theoretical physics physical biomechanics biomechanical mechanics mechanical model models concept concepts idea ideas