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Airborne concentrations and chemical considerations of radioactive ruthenium from an undeclared major nuclear release in 2017 | PNAS
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The dispersion of radiation in Europe due to wildfires in Ukrania and its impacts (video) - Northmeteo.gr
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Radiation detections in northern Europe: what we do and don't know - Bulletin of the Atomic Scientists
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Radioactive cloud across Europe in 2017 'likely came from Russian nuclear reprocessing plant' | Daily Mail Online
Radiation cloud that spread across Europe in 2017: Russian source | news.com.au — Australia's leading news site
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A mysterious peak of radiation affects Europe | OMPE | Organisation Mondiale pour la Protection de l'Environnement
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Mysterious 2017 radioactive cloud over Europe originated in Russia, researchers say - The Washington Post
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