- Hospital wards1
- Housefly1
- Hygiene1
- Industrial safety1
- Insects1
- Insects as carriers of disease1
- Laborers1
- Laundry1
- Lice as carriers of disease1
- Machinery1
- Maps1
- Marriage law1
- Medical personnel1
- Medications1
- Medicine, Military6
- Military facilities1
- Military hygiene3
- Mosquitoes as carriers of disease1
- Mosquitos1
- Mothers1