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ספרים בחינם

The Sanitary Condition of the Poor in Relation to Disease, Poverty, and Crime With an appendix on the control and prevention of infectious diseases

Benson Baker · 2017

ספרייה ציבורית, Project Gutenberg. בלי הרשמה.

Sanitation, HouseholdPoor -- Health and hygiene -- Great BritainSanitation -- Great BritainCommunicable diseases -- Prevention