Subjects
- Water Supply2
- Antisepsis1
- Bartels, Max (Maximilian), 1843-1904.1
- Botany1
- California1
- Cholera -- epidemiology1
- Cholera -- prevention & control1
- Climate1
- Communicable Disease Control1
- Communicable Diseases -- etiology1
- Curriculum1
- Disease -- etiology1
- Disease Outbreaks1
- Disease Susceptibility1
- District of Columbia1
- Dysentery -- drug therapy1
- Facial Neuralgia -- drug therapy1
- Food Contamination1
- Geography1
- Germ Theory of Disease1
