Leclused Active member Nov 22, 2018 #1 For those who understand French a guideline in "modern" surveying with a lot of links and tips. https://crei.ffspeleo.fr/Telechargement/CREI_essentiel_topo.pdf
For those who understand French a guideline in "modern" surveying with a lot of links and tips. https://crei.ffspeleo.fr/Telechargement/CREI_essentiel_topo.pdf