Subjects
- Medical Errors1
- Medical Laboratory Personnel1
- Medical Writing1
- Mercury Compounds -- adverse effects1
- Michigan1
- Middleton, William Shainline, 1890-1975.1
- Military Facilities -- history1
- Military Personnel -- classification1
- Military Personnel -- psychology1
- Mississippi1
- Missouri1
- Mites1
- Morale1
- Mosquito Control -- methods1
- Museum of Field Equipment (Carlisle Barracks, Pa.)1
- Mythology1
- National Board of Health (U.S.)1
- National Naval Medical Center (U.S.)1
- National Research Council (U.S.). Division of Medical Sciences.1
- National Research Council (U.S.). Drug Research Board.1