Medicine (R)
| Q-Science | R-Medicine | S-Agriculture | T-Technology | U-Military | V-Naval |
| Medicine (General) | R |  | Public Aspects of Medicine | RA |
 | Pathology | RB |
 | Internal Medicine & Practice of Medicine | RC |
 | Surgery | RD |
 | Ophthalmology | RE |
 | Otorhinolaryngology | RF |
 | Gynecology & Obstetrics | RG |
 | Pediatrics | RJ |
 | Dentistry | RK |
 | Dermatology | RL |
 | Therapeutics & Pharmacology | RM |
 | Pharmacy & Materia Medica | RS |
 | Nursing | RT |
 | Botanic, Thomsonian, & Eclectic Medicine | RV |
 | Homeopathy | RX |
 | Other | RZ |