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Subjects
- London7
- Louis, P. C. A. (Pierre Charles Alexandre), 1787-1872.1
- Malaria3
- Malta2
- Mandibular Diseases1
- Maryland1
- McGrigor, James, Sir, 1771-1858.1
- Medicine2
- Meteorological Concepts4
- Microscopy2
- Military Facilities1
- Military Hygiene3
- Military Medicine3
- Military Medicine -- legislation & jurisprudence1
- Military Personnel1
- Mortality1
- Mosquito Control1
- Mucous Membrane -- pathology1
- National Board of Health (U.S.)1
- Naval Medicine1