DIN EN 623-4:2005 Advanced technical ceramics - Monolithic ceramics - General and textural properties - Part 4: Determination of surface roughness; German version EN 623-4:2004
2005DIN EN 623-4:2005 Advanced technical ceramics - Monolithic ceramics - General and textural properties - Part 4: Determination of surface roughness; German version EN 623-4:2004