NF X41-501:1986 WOOD PRESERVATIVES. GUIDE TO SAMPLING AND PREPARATION OF WOOD PRESERVATIVES AND TREATED TIMBER FOR ANALYSIS. (EUROPEAN STANDARD EN 212).
1986NF X41-501:1986 WOOD PRESERVATIVES. GUIDE TO SAMPLING AND PREPARATION OF WOOD PRESERVATIVES AND TREATED TIMBER FOR ANALYSIS. (EUROPEAN STANDARD EN 212).