DIN 1089-3
DIN 1089-3 Refractories for use in coke ovens; mortar for silica and fireclay bricks; requirements and testing
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 10/01/1990
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 10/01/1990