Owen, B The beta calibration of radiation survey instruments at protection levels. [electronic resource] - Physics in medicine and biology Mar 1972 - 175-86 p. digital Publication Type: Journal Article ISSN: 0031-9155 Standard No.: 10.1088/0031-9155/17/2/002 doi Subjects--Topical Terms: AbsorptionAirElectrodesElectronsIonsLightPromethiumRadiation DosageRadiation Monitoring--instrumentationRadiation ProtectionRadioisotopesScattering, RadiationStrontium IsotopesThalliumYttrium Isotopes