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Subjects
- 20th General Hospital.1
- Academies and Institutes -- organization & administration1
- Advisory Committees1
- Aedes -- pathogenicity1
- Aerospace Medicine13
- Air Ambulances2
- Aircraft4
- Alaska2
- Allied Forces. Army Group, 21st.1
- Allied Health Personnel1
- Altitude1
- Altitude Sickness1
- Ambulances21
- American Civil War4
- American College of Physicians.1
- American National Red Cross.2
- American Red Cross. Military Hospital No. 5.1
- Amputation1
- Amputees1
- Amputees -- rehabilitation1