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Subjects
- Mentally Ill Persons1
- Mentally Ill Persons -- history1
- Mercury Compounds -- therapeutic use1
- Meteoroids1
- Midwifery2
- Military Hygiene1
- Mineral Waters1
- Mineral Waters -- therapeutic use1
- Missouri2
- Mollusca -- classification2
- Moore, Samuel W. (Samuel William), 1786-1854.1
- Mortality1
- Morton, W. T. G. (William Thomas Green), 1819-1868.1
- Mythology1