prEN 351-1-1992 Durability of wood and wood based products; preservative-treated solid wood; part 1: classification of preservative penetration and retention
2021prEN 351-1-2021 Durability of wood and wood-based products - Preservative-treated solid wood - Part 1: Classification of preservative penetration and retention
0000 prEN 351-1-2020
1992prEN 351-1-1992 Durability of wood and wood based products; preservative-treated solid wood; part 1: classification of preservative penetration and retention