Soviet Union's polluted land.
D047852:Chernobyl Nuclear Accident; D004787:Environmental Pollution / Q000009:adverse effects*; D015386:Hazardous Substances / Q000009:adverse effects*; D009369:Neoplasms / Q000453:epidemiology / Q000209:etiology*; D054043:Nuclear Weapons; D014586:USSR / Q000453:epidemiology
D015386:Hazardous Substances