Measurement of radioactivity in the environment - Air: radon-222 - Part 2: Integrated measurement method for determining average potential alpha energy concentration of its short-lived decay products (ISO 11665-2:2019); German version EN ISO 11665-2:2019
环境中放射性的测量.空气:氡-222.第2部分:测定其短寿命衰变产物的平均潜在α能浓度的综合测量方法(ISO 11665-2-2019);德文版EN ISO 11665-2:2019