[On the problem of standardizing the level of naturally radioactive substances in construction materials].
D006798:Housing / Q000592:standards*; D008452:Maximum Allowable Concentration; D011868:Radioisotopes; D011874:Radiometry
D011868:Radioisotopes
K voprosu o normirovanii soderzhaniia estestvennykh radioaktivnykh veshchestv v stroitel'nykh materialakh.