Subjects
- Bacteriology1
- Boston1
- Cholera -- transmission1
- Climate1
- Coinfection1
- Crops, Agricultural1
- Diet, Vegetarian1
- Dysentery1
- Education, Medical -- organization & administration1
- Emigrants and Immigrants1
- England1
- Epidemics -- prevention & control1
- Haygarth, John, 1740-1827.1
- Hygiene -- education1
- Infant Mortality1
- Infant Nutrition Disorders -- prevention & control1
- Liberia1
- Louisiana1
- Maine1
- Malaria, Falciparum -- epidemiology1