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- Rabbits1
- Rabbits -- physiology1
- Race Relations1
- Radiation Injuries -- pathology1
- Radiography5
- Radiography -- instrumentation1
- Rape1
- Rape -- diagnosis1
- Rape -- prevention & control1
- Rape -- rehabilitation1
- Rare Books9
- Rats1
- Receptors, Estrogen -- physiology1
- Records1
- Red Cross1
- Rees, G. O. (George Owen), 1813-1889.1
- Refraction, Ocular1
- Refusal to Treat1
- Regional Blood Flow1
- Rehabilitation Centers1