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Subjects
- Alfieri, Emilio, 1874-1949.1
- Allergists5
- Allergy and Immunology52
- Ambulances1
- American Civil War4
- American Foundation for AIDS Research.1
- American National Red Cross.1
- Ames, Adelbert, 1880-1
- Amygdalin1
- Amyl Nitrite1
- Anatomists172
- Anatomy, Comparative2
- Anderson, Charles 1903-1958.1
- Anderson, James, 1738-1809.1
- Anderson, Thomas Bruce Hurt 1891-1986.1
- Anderson, W. A. D. (William Arnold Douglas), 1910-1986.1
- Andresen, Albert Frederick Ruger, 1885-1
- Anemia, Pernicious3
- Anesthesiologists6
- Anesthesiology2