- Anatomy, Veterinary1
- Ancylostoma -- pathogenicity1
- Ancylostomatoidea -- anatomy & histology1
- Ancylostomatoidea -- growth & development1
- Ancylostomatoidea -- pathogenicity1
- Ancylostomiasis2
- Ancylostomiasis -- therapy1
- Anderson, James, 1738-1809.1
- Anderson, M. F. (Mark French)1
- Anderson, Mason G.1
- Anderson, W. A. D. (William Arnold Douglas), 1910-1986.1
- Andersonville Prison.1
- Andral, G. (Gabriel), 1797-1876.1
- Andresen, Albert Frederick Ruger, 1885-1
- Andrews, Samuel M., 1830-1
- Andrino, J. Luis (JoseĢ Luis)1
- Androgen Antagonists -- adverse effects1
- Androgen Antagonists -- therapeutic use1
- Andromachus, the Elder.1
- Anecdotes1