2014DIN EN ISO 10081-4:2014-12 Classification of dense shaped refractory products - Part 4: Special products (ISO 10081-4:2014); German version EN ISO 10081-4:2014
1970DIN EN ISO 10081-4 E:2014-06 Classification of densely formed refractory products Part 4: Special products (draft)
2014DIN EN ISO 10081-4:2014 Classification of dense shaped refractory products - Part 4: Special products (ISO 10081-4:2014); German version EN ISO 10081-4:2014
1970DIN EN ISO 10081-4 E:2013-09 Classification of densely formed refractory products Part 4: Special products (draft)