https://www.mtbcult.it/118700/trail-building-school-2018/
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24/02/2015 – Bicilive – http://mountainbike.bicilive.it/menu/trail-builder/proteggi-sentieri-supporta-imba-italia/
http://www.mtb-mag.com/un-successo-il-primo-corso-imba-di-trailbuilding/
