NF P84-128-1*NF EN 1849-1:1999 Flexible sheets for waterproofing - Determination of thickness and mass per unit area - Part 1 : bitumen sheets for roof waterproofing
1999NF P84-128-1*NF EN 1849-1:1999 Flexible sheets for waterproofing - Determination of thickness and mass per unit area - Part 1 : bitumen sheets for roof waterproofing