[Strontium 90--a radiation hygiene problem].
D006801:Humans; D006920:Hygiene; D011827:Radiation; D011847:Radioactive Fallout; D012106:Research; D013324:Strontium; D013325:Strontium Isotopes; D013326:Strontium Radioisotopes
D011847:Radioactive Fallout; D013325:Strontium Isotopes; D013326:Strontium Radioisotopes; D013324:Strontium
RADIOACTIVE FALLOUT; STRONTIUM ISOTOPES