KS M ISO 5939:2013 Carbonaceous materials for the production of aluminium-Pitch for electrodes-Determination of water content-Azeotropic distillation (Dean and Stark) method
2013KS M ISO 5939:2013 Carbonaceous materials for the production of aluminium-Pitch for electrodes-Determination of water content-Azeotropic distillation (Dean and Stark) method