Reading: Transactions of the Fifteenth International Congress on Hygiene and Demography, Washington, September 23-28, 1912: pt. I. Section III: Hygiene of infancy and childhood; School hygiene. pt. II. Section IV: Hygiene of occupations full version

You are about to access our book library "Transactions of the Fifteenth International Congress on Hygiene and Demography, Washington, September 23-28, 1912: pt. I. Section III: Hygiene of infancy and childhood; School hygiene. pt. II. Section IV: Hygiene of occupations full version" .