Brief Overview (LC) Library of Congress Classification System Outline NLM Classification Outline

General Works

Philosophy, Religion

B - BD, BH - HX

Auxiliary Sciences of History

History - General, European, Eastern Hemisphere

D - DU
History - Western Hemisphere

E, F
Geography, Anthropology, Recreation

G - GV, includes Kinesiology Social Sciences Economics & Business :

Sociology; Social Sciences :

Social Work, Criminology :

Political Science

J - JX

K - KK

L - LT

M - MT
Visual Arts

N - NX
Languages & Literatures

P - PZ

Q - QR

R - RZ
S - SK

T - TP, TS
Technology - Arts & Crafts

Photography (as fine and applied art)

U - UH
Military Science

V - VM
Naval Science

History of Books, Library Science, Bibliography
















































































AC - Collections. Series. Collected Works
AE - Encyclopedias (General)
AG - Dictionaries and other general reference works
AI - Indexes (General)
AM - Museums (General)
AP - Periodicals (General)
AS - Academics and Learned Societies
AY - Yearbooks. Almanacs. Directories
AZ - History of Scholarship and Learning. The Humanities (Philosophy,
        Psychology, Religion

B -  History and Systems of Philosophy
BC - Logic
BD - Speculative Philosophy
BF - Psychology (including Parapsychology and the Occult)
BH - Aesthetics
BJ - Ethics. Social Usages. Etiquette.
BL - Religions. Mythology. Rationalism
BM - Judaism
BP - Islam. Bahaism. Theosophy, etc.
BQ - Buddhism
BR - Christianity (General)
BS - The Bible
BT - Doctrinal Theology
BV - Practical Theology
BX - Christian Denominations and SectsAuxiliary Sciences of History

CC - Archaeology (General)
CD - Diplomatics. Archives. Seals
CE - Technical Chronology. Calendar
CJ - Numismatics
CN - Inscriptions. Epigraphy
CR - Heraldry
CS - Genealogy
CT - Biography (General)History - General & Eastern Hemisphere

D - History (General)
DA - Great Britain
DAW - Central Europe
DB - Austria, Czechoslovakia, Hungary
DC - France
DD - Germany
DE - Mediterranean, Greco-Roman World
DG - Italy
DH - Netherlands (Low Countries)
DJ - Netherlands (Holland), Belgium, Luxembourg
DJK - Eastern Europe
DK - Russia (& Soviet Union). Poland. Finland
DL - Northern Europe. Scandinavia
DP - Spain. Portugal
DR - Eastern Europe. Turkey
DS - Asia
DT - Africa
DU - Australia, New Zealand. Oceania (South Seas)History -
        Western Hemisphere

E - America (General) and United States

F1-F975 - United States (local history)
F1001-F1140 - Canada
F1201-F1392 - Mexico
F1401-3799 - Central and South American, CaribbeanGeography,
                      Anthropology, Recreation (Kinesiology)

G - Geography (General). Atlases. Maps
GA - Mathematical Geography, Cartography
GB - Physical Geography
GC - Oceanography
GE - Environmental Sciences
GF - Human Ecology. Anthropogeography
GN - Anthropology, Ethnology, Ethnography
GR - Folklore
GT - Manners and Customs
GV - Recreation. Sports. Leisure

H - Social Sciences (General)
HA - Statistics
HB - Economic Theory. Demography
HC - Economic History and Conditions: (By geographic region or country)
HD - Economic History and Conditions: (By Subject: Land, Agriculture, 
HE - Transportation and Communications
HF - Commerce. Accounting
HG - Finance
HJ - Public Finance
HM - Sociology (General and theoretical)
HN - Social History. Social Problems. Social Reform
HQ - Social Groups -- The family; marriage; women (including feminism), etc.
HS - Societies: Secret, benevolent, etc. Clubs
HT - Communities. Classes. Races
HV - Social Pathology. Criminology. Social and Public Welfare
HX - Socialism. Anarchism. CommunismPolitical Science

J - Official Documents (general legislative and executive papers)
JA - Collections and General Works
JC - Political Theory. Theory of the State
JF - Constitutional History and Administration: General works.
       Comparative works.
JK - United States Government (federal and state)
JL - British America. Latin America
JN - Europe
JQ - Asia. Africa. Australia. Oceania
JS - Local Government 
JV - Colonies and Colonization. Emigration and Immigration
JX - International Law. International RelationsLaw

K - Law (General)
KD - Law of the United Kingdom and Ireland
KE - Law of Canada
KF - Law of United States
KFT - KFT 1200-1799 Law of Texas
KG - Latin America (General). Mexico and Central America.
KH - South America
KJ-KK - EuropeEducation 

L - Education (General)
LA - History of Education
LB - Educational Theory and Practice. Special Aspects of Education
LC - Individual Institutions: Universities, Colleges, and Schools
LD - United States
LE - Americas, except the United States
LF - Europe
LG - Asia. Africa. Oceania
LH - College and School Publications
LJ - Student Fraternities and Societies
LT - Textbooks (General)Music

M - Music Scores
ML - Literature of Music
MT - Music Instruction and StudyVisual Arts

N - Visual Arts (General)
NA - Architecture
NB - Sculpture
NC - Graphic Arts (Drawing, Design, Illustration)
ND - Painting
NE - Print Media
NK - Decorative and Applied Arts. Other arts
NX - Arts in generalLanguage and Literature

- Philology and Linguistics

PA - Classical Philology (Greek and Latin)
PB - Modern European Languages (General), Celtic Languages and Literatures
PC - Romance Languages
PD - Old Germanic and Scandinavian Languages
PE - English Language
PF - Dutch, Flemish, and German Languages
PG - Slavic, Baltic, Albanian: Languages and Literatures
PH - Finno-Ugrian. Basque Languages & Literature
PJ - Oriental, Semitic Languages and Literatures
PK - Indo-Iranian Languages and Literatures
PL - Languages and Literatures of Eastern Asia, Africa, and Oceania
PM - American Indian and Artificial Languages
PN - Literary History. Drama. Literary Collections (General)
PQ - Romance Literatures
PR - English Literatures
PS - American Literature
PT - German Literatures
PZ - Children's & Juvenile LiteratureSciences

Q - Science (General). Information Theory
QA - Mathematics
QB - Astronomy
QC - Physics
QD - Chemistry
QE - Geology
QH - Natural History (General). Biology (General)
QK - Botany
QL - Zoology
QM - Human Anatomy
QP - Physiology
QR - MicrobiologyMedicine

R - Medicine (General)
RA - Public Aspects of Medicine
RB - Pathology
RC - Internal Medicine. Practice of Medicine
RD - Surgery
RE - Ophthalmology
RF - Otorhinolaryngology
RG - Gynecology and Obstetrics
RJ - Pediatrics
RK - Dentistry
RL - Dermatology
RM - Therapeutics. Pharmacology
RS - Pharmacy and Materia Medica
RT - Nursing
RV - Botanic, Thomsonian and Eclectic Medicine
RX - Homeopathy
RZ - Other Systems of MedicineAgricultureS - Agriculture (General)
SB - Plant Culture
SD - Forestry
SF - Animal Culture
SH - Aquaculture, Fisheries, Fishing
SK - Hunting. Wildlife ManagementTechnology

T - Technology (General)
TA - Engineering (General). Civil Engineering
TC - Hydraulic Engineering
TD - Environmental Technology. Sanitary Engineering
TE - Highway Engineering. Roads and Pavements
TF - Railroad Engineering and Operation
TG - Bridge Engineering
TH - Building Construction
TJ - Mechanical Engineering and Machinery
TK - Electronics and Electrical Engineering. Nuclear Engineering
TL - Motor Vehicles. Aeronautics. Astronautics
TN - Mining Engineering. Metallurgy
TP - Chemical Technology
TS - ManufacturesTechnology - Arts & Crafts

TR - Photography (as fine and applied art)
TT - Handicrafts. Arts and Crafts.
TX - Home EconomicsMilitary Science

U - Military Science (General)
UA - Armies: Organization, description, facilities, etc.
UB - Military Administration
UC - Maintenance and Transportation
UD - Infantry
UE - Cavalry. Armored and Mechanized Cavalry
UF - Artillery
UG - Military Engineering. Air Forces. Air Warfare
UH - Other ServicesNaval Science

V - Naval Science (General)
VA - Navies: Organization, description, facilities, etc.
VB - Naval Administration
VC - Naval Maintenance
VD - Naval Seaman
VE - Marines
VF - Naval Ordinance
VG - Minor Services of the Navy
VK - Navigation. Merchant Marine
VM - Naval Architecture. Shipbuilding. Marine Engineering

Z - Library Science. Bibliography History of Books, Writing,
      Book Industries and Trade, Libraries and Library Science, Bibliography

Preclinical Sciences:

QS Human Anatomy
QT Physiology
QU Biochemistry. Cell Biology and Genetics
QV Pharmacology
QW Microbiology and Immunology
QX Parasitology
QY Clinical Pathology
QZ Pathology

Medicine and Related Subjects:

W General Medicine. Health Professions
WA Public Health
WB Practice of Medicine
WC Communicable Diseases
WD Disorders of Systemic, Metabolic or Environmental Origin, etc.
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
WP Gynecology
WQ Obstetrics
WR Dermatology
WS Pediatrics
WT Geriatrics. Chronic Disease
WU Dentistry. Oral Surgery
WV Otolaryngology
WW Ophthalmology
WX Hospitals and Other Health Facilities
WY Nursing
WZ History of Medicine. Medical Miscellany 19th Century Schedule