Six lectures upon school hygiene : delivered under the auspices of the Massachusetts Emergency and Hygiene Association to teachers in the public schools.
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Six lectures upon school hygiene : delivered under the auspices of the Massachusetts Emergency and Hygiene Association to teachers in the public schools. Credit: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.. Public Domain Mark