This article is from the Libraries FAQ, by Anthony Wilson paw@iglou.com with numerous contributions by others.
MeSH
QS: Human Anatomy
QT: Physiology
QU: Biochemistry
QV: Pharmacology
QW: Bacteriology & Immunology
QX: Parasitology
QY: Clinical Pathology
QZ: Pathology
W: Medical Profession
WA: Public Health
WB: Practice of Medicine
WC: Infectious Diseases
WD 100: Deficiency Diseases
WD 200: Metabolic Diseases
WD 300: Diseases of Allergy
WD 400: Animal Poisoning
WD 500: Plant Poisoning
WD 600: Diseases Caused by Physical Agents
WE: Musculoskeletal System
WF: Respiratory System
WG: Cardiovascular System
WH: Hemic amp; Lymphatic Systems
WI: Gastrointestinal System
WJ: Urogenital System
WK: Endocrine System
WL: Nervous System
WM: Psychiatry
WN: Radiology
WO: Surgery
WP: Gynecology
WQ: Obstetrics
WR: Dermatology
WS: Pediatrics
WT: Geriatrics. Chronic Disease
WU: Dentistry. Oral Surgery
WV: Otorhinolaryngology
WW: Opthalmology
WX: Hospitals
WY: Nursing
WZ: History of Medicine
Black's Dental Classification
D Dentistry in general
D01-09 Form numbers
D1-17 Basic sciences
D2-29 Operative dentistry
D3-38 Prosthetic dentistry
D4-47 Orthodontics
D5-59 Dental health
D6-69 Oral pathology
D7-79 Oral surgery
D8-89 Dental practice and management
D9-95 Anesthesia
 
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