Transactions of the Seventh International Congress of Hygiene and Demography. Volume IV
Transactions of the Seventh International Congress of Hygiene and Demography. Volume IV
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London, August 10th - 17th, 1891. Section IV: Infancy, Childhood, and School Life
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datePublished
1892-01-01
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ngNk5l36xNEZ8YaW3OXl5Z4x
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Transactions of the Seventh International Congress of Hygiene and Demography. Volume IV