A 21-page pamphlet of the diseases and hygiene of typographers; chiefly diseases related to their exposure to lead through their hands and breathing in of of lead particles in the air as a result of poor ventilation. …
A 21-page pamphlet of the diseases and hygiene of typographers; chiefly diseases related to their exposure to lead through their hands and breathing in of of lead particles in the air as a result of poor ventilation. …
