No abstract available
Publication types
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Biography
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Historical Article
MeSH terms
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Adolescent
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Child
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Child Care / history*
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Child Health Services / history*
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Child, Preschool
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Family Health
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Health Education / history*
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History, 19th Century
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History, 20th Century
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Humans
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Infant
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Russia
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Russia (Pre-1917)
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School Health Services / history*