DIN 51068-1:1976 Testing of ceramic raw and basic materials - Determination of resistance to thermal shock - Water quenching method for refractory bricks
2008DIN 51068:2008 Testing of ceramic raw and basic materials - Determination of resistance to thermal shock - Water quenching method for refractory bricks
1976DIN 51068-1:1976 Testing of ceramic raw and basic materials - Determination of resistance to thermal shock - Water quenching method for refractory bricks