KS H ISO TS 7821:2017 Tobacco and tobacco products-Preparation and constitution of identical samples from the same lot for collaborative studies for the evaluation of test methods
2017KS H ISO TS 7821:2017 Tobacco and tobacco products-Preparation and constitution of identical samples from the same lot for collaborative studies for the evaluation of test methods
2007KS H ISO TS 7821:2007 Tobacco and tobacco products-Preparation and constitution of identical samples from the same lot for collaborative studies for the evaluation of test methods