TY JOUR TI Justification of Remediation Criteria of Uranium Legacy Sites KW uranium legacy KW remediation criteria KW site using areas KW natural radionuclides KW radioactive contamination KW remediation KW past activities KW manmade radionuclides KW specific activity JO Medical Radiology and radiation safety AU Titov, A.V. AU Shandala, N.K. AU Bel'skih, Y.S. AU Isaev, D.V. AU Semenova, M.P. AU Doronieva, T.A. AU Oskina, K.Y. AU Gushchina, Y.V. PY 2021 IS 66 PB Federal Medical Biological Agency of Russia