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Call Numbers by Subject
 

The Hirsh Library uses the National Library of Medicine Classification for its call numbers in clinical sciences, dentistry and medicine. The NLM Classification is a system of mixed notation, where letters denote disciplines, specialties, systems, or other broad subjects, and numbers specify more particular subjects or types of works. For instance, anatomical atlases would be shelved at QS 17, while general psychiatric textbooks would be shelved at WM 100. An interactive index of the complete system is available at NLM: Outline of the NLM Classification.

Anatomy QS   Metabolic Diseases WD 200  
General Works
Anesthesia WO 200   Microbiology QW  
Q's = 4
W's = 100
Biochemistry QU   Musculoskeletal System WE  
Atlases = 17
Cardiovascular System WG   Nervous System WL  
Diagnosis = 141
Chronic Disease WT 500   Nutrition Disorders WD 100  
Dictionaries = 13
Communicable Diseases WC   Obstetrics WQ  
Handbooks = 39
Dentistry WU   Oncology QZ 200  
Lab Manuals = 25
Dermatology WR   Ophthalmology WW  
Laws = 32
Diagnosis, General WB 141   Otolaryngology WV  
Statistics & Tables = 16
Diagnostic Imaging WN 180   Pathology QZ  
Digestive System WI   Pathology, Clinical QY  
Endocrine System WK   Pediatrics WS    
Genetics QZ 50   Pharmacology QV    
Geriatrics WT   Physiology QT    
Gynecology WP   Practice of Medicine WB    
Health Professions W   Preventive Medicine WA 108    
Hemic & Lymphatic Systems WH   Psychiatry WM    
Histology QS 504   Public Health WA    
Hospitals & Health Facilities WX   Radiology WN    
Immunologic & Collagen Diseases WD 300   Respiratory System WF    
Immunology QW 501   Surgery WO    
Internal Medicine WB   Therapeutics WB 300    
Kidney WJ 600   Toxicology QV 600    
Liver WI 700   Urogenital System WJ