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Subjects
- United States9
- Cholera -- etiology1
- Contracts1
- Dispensatories1
- Economics, Hospital1
- Education, Medical -- history1
- Health Expenditures1
- Hospitals, Military1
- Hospitals, Military -- economics1
- Hospitals, Special1
- Insurance, Life1
- Medicine1
- Medicine -- trends1
- Naval Medicine1
- Schools, Medical -- history1
- Water Supply1
- Weather1