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1. |
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Backcountry Skiing
Martin Volken, Scott Schell, Margaret Wheeler
Häftad. Mountaineers Books, USA, 2007.
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2. |
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Backcountry Skiing
Martin Volken, Scott Schell, Margaret Wheeler
E-bok. Mountaineers Books, USA, 2007.
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3. |
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Backcountry Ski & Snowboard Routes Washington
Martin Volken, Guides Of Pro Guiding Service
E-bok. Mountaineers Books, USA, 2014.
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4. |
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Dom & Täschhorn
Daniel Anker, Caroline Fink, Marco Volken, Martin Rickenbacher, Emil Zopfi
Inbunden. AS Verlag, Schweiz, 2012.
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