[A method of measuring beta-active preparations with the use of end-window radiation counters].
D004781:Environmental Exposure; D011194:Potassium Isotopes / Q000592:standards; D011834:Radiation Monitoring; D011853:Radiobiology; D011874:Radiometry
D011194:Potassium Isotopes
Metod izmereniia beta-aktivnykh preparatov s pomoshch'iu tortsovykh schetchikov.