DIN EN 539-2:2012 Clay roofing tiles for discontinuous laying - Determination of physical characteristics - Part 2: Test for frost resistance; German version FprEN 539-2:2012
2013DIN EN 539-2:2013-08 Clay roofing tiles for discontinuous laying - Determination of physical characteristics - Part 2: Test for frost resistance; German version EN 539-2:2013
2013DIN EN 539-2:2013 Clay roofing tiles for discontinuous laying - Determination of physical characteristics - Part 2: Test for frost resistance; German version EN 539-2:2013
2006DIN EN 539-2:2006 Clay roofing tiles for discontinuous laying - Determination of physical characteristics - Part 2: Test for frost resistance; English version of DIN EN 539-2:2006-10