No abstract available
MeSH terms
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Biological Warfare / history*
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Disease Outbreaks* / history
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Female
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History, 20th Century
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Humans
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Kazakhstan / epidemiology
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Smallpox / epidemiology*
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Smallpox / history
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Smallpox / microbiology
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USSR / epidemiology
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Variola virus / classification
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Variola virus / pathogenicity*