Measurement of radioactivity in the environment - Soil - Part 4: Plutonium 238 and plutonium 239 + 240 - Test method using alpha spectrometry (ISO 18589-4:2019); German version EN ISO 18589-4:2021
环境中放射性的测量.土壤.第4部分:钚238和钚239+240.使用阿尔法光谱法的试验方法(ISO 18589-4-2019);德文版EN ISO 18589-4:2021