KS C IEC 61577-2:2016 Radiation protection instrumentation — Radon and radon decay product measuring instruments — Part 2: Specific requirements for 222Rn and 220Rn measuring instruments
2016KS C IEC 61577-2:2016 Radiation protection instrumentation — Radon and radon decay product measuring instruments — Part 2: Specific requirements for 222Rn and 220Rn measuring instruments
2012KS C IEC 61577-2:2012 Radiation protection instrumentation-Radon and radon decay product measuring instruments-Part 2:Specific requirements for radon measuring instruments