DIN EN 16853:2017-07 Conservation of cultural heritage - Conservation process - Decision making, planning and implementation; German version EN 16853:2017
2017DIN EN 16853:2017-07 Conservation of cultural heritage - Conservation process - Decision making, planning and implementation; German version EN 16853:2017
2017DIN EN 16853:2017 Conservation of cultural heritage - Conservation process - Decision making, planning and implementation; German version EN 16853:2017