DIN EN 16581:2015-03 Conservation of Cultural Heritage - Surface protection for porous inorganic materials - Laboratory test methods for the evaluation of the performance of water repellent products; German version EN 16581:2014
2015DIN EN 16581:2015-03 Conservation of Cultural Heritage - Surface protection for porous inorganic materials - Laboratory test methods for the evaluation of the performance of water repellent products; German version EN 16581:2014
2015DIN EN 16581:2015 Conservation of Cultural Heritage - Surface protection for porous inorganic materials - Laboratory test methods for the evaluation of the performance of water repellent products; German version EN 16581:2014