NF P21-500-2*NF EN 14081-2:2018 Timber structures - Strength graded structural timber with rectangular cross section - Part 2 : machine grading;additional requirements for type testing
2018NF P21-500-2*NF EN 14081-2:2018 Timber structures - Strength graded structural timber with rectangular cross section - Part 2 : machine grading;additional requirements for type testing