The document specifies general requirements and appearence classses for both single-layer and multi-layer solid wood panels, manufactured from softwood species (e.g. spruce, pine, larch).#,,#
DIN EN 13017-1:2001 history
2001DIN EN 13017-1:2001-03 Solid wood panels - Classification by surface appearance - Part 1: Softwood; German version EN 13017-1:2000
2001DIN EN 13017-1:2001 Solid wood panels - Classification by surface appearance - Part 1: Softwood; German version EN 13017-1:2000