title: The beta calibration of radiation survey instruments at protection levels.
mesh_terms: D000042:Absorption; D000388:Air; D004566:Electrodes; D004583:Electrons; D007477:Ions; D008027:Light; D011399:Promethium; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000295:instrumentation*; D011835:Radiation Protection; D011868:Radioisotopes; D012542:Scattering, Radiation; D013325:Strontium Isotopes; D013793:Thallium; D015020:Yttrium Isotopes
chemical_list: D007477:Ions; D011868:Radioisotopes; D013325:Strontium Isotopes; D015020:Yttrium Isotopes; D013793:Thallium; D011399:Promethium