We default to using the National Library of Medicine (NLM) Classification System for call numbers, but if we’re cataloging a book that doesn’t fall within that system, we use the Library of Congress (LoC) Classification System. The list below shows how the books are organized in the stacks. Headings in mixed (upper and lower) case are NLM. Titles in all caps are LoC. This works for us because Q in LoC covers Science, and the Qs in NLM cover Preclinical Sciences. NLM uses Ws for Medicine and Related Subjects, and LoC does not use Ws.
A GENERAL WORKS
B PHILOSOPHY. PSYCHOLOGY. RELIGION
C AUXILIARY SCIENCES OF HISTORY
D WORLD HISTORY AND HISTORY OF EUROPE, ASIA, AFRICA, AUSTRALIA, NEW ZEALAND, ETC.
E HISTORY OF THE AMERICAS
F HISTORY OF THE AMERICAS
G GEOGRAPHY. ANTHROPOLOGY. RECREATION
H SOCIAL SCIENCES
J POLITICAL SCIENCE
K LAW
L EDUCATION
M MUSIC AND BOOKS ON MUSIC
N FINE ARTS
P LANGUAGE AND LITERATURE
Q SCIENCE
QS Human Anatomy
QT Physiology
QU Biochemistry. Cell Biology and Genetics
QV Pharmacology
QW Microbiology and Immunology
QX Parasitology. Disease Vectors
QY Clinical Laboratory Pathology
QZ Pathology
R MEDICINE
S AGRICULTURE
T TECHNOLOGY
U MILITARY SCIENCE
V NAVAL SCIENCE
W General Medicine. Health Professions
WA Public Health
WB Practice of Medicine
WC Communicable Diseases
WD Medicine in Selected Environments
WE Musculoskeletal System
WF Respiratory System
WG Cardiovascular System
WH Hemic and Lymphatic Systems
WI Digestive System
WJ Urogenital System
WK Endocrine System
WL Nervous System
WM Psychiatry
WN Radiology. Diagnostic Imaging
WO Surgery. Wounds and Injuries
WP Gynecology
WQ Obstetrics
WR Dermatology
WS Pediatrics
WT Geriatrics
WU Dentistry. Oral Surgery
WV Otolaryngology
WW Ophthalmology
WX Hospitals and Other Health Facilities
WY Nursing
WZ History of Medicine. Medical Miscellany
Z BIBLIOGRAPHY. LIBRARY SCIENCE. INFORMATION RESOURCES (GENERAL)
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