Measurement of radioactivity in the environment - Air: radon-222 - Part 12: Determination of the diffusion coefficient in waterproof materials: membrane one-side activity concentration measurement method (ISO/TS 11665-12:2018); German version CEN ISO/TS 11665-12:2021
环境放射性测量空气:氡-222第12部分:防水材料中扩散系数的测定膜单侧放射性浓度测量法(ISO/TS 11665-12-2018);德语版CEN ISO/TS 11665-12:2021