Library of Congress classes at the Gennadius Library
A General Works
AC Collections. Series. Collected works
AE Encyclopedias
AI Indexes
AM Museums. Collectors and collecting
AS Academies and Learned Societies
AY Yearbooks. Almanacs. Directories
AZ History of scholarship and learning. The Humanities
B Philosophy. Psychology. Religion
BC Logic
BD Speculative philosophy
BF Psychology
BH Aesthetics
BJ Ethics
BL Religions. Mythology. Rationalism
BM Judaism
BP Islam. Bahaism. Theosophy, etc.
BQ Buddhism
BR Christianity
BS The Bible
BT Doctrinal Theology
BV Practical Theology
BX Christian Denominations
C Auxiliary Sciences of History
C Auxiliary Sciences of History (General)
CB History of Civilization
CC Archaeology
CD Diplomatics. Archives. Seals
CE Technical Chronology. Calendar
CJ Numismatics
CN Inscriptions. Epigraphy
CR Heraldry
CS Genealogy
CT Biography
D History
D History (General)
DA Great Britain
DAW Central Europe
DB Austria Liechtenstein Hungary Czechoslovakia
DC France Andorra Monaco
DD Germany
DE Greco-Roman World
DF Greece
DF501-649 Medieval Greece. Byzantine Empire, 323-1453
DF501-518 General
DF520-542.4 Antiquities. Social life and customs. Ethnography
DF545-548 Military history. Political history. Empire and papacy
DF550-649 History
DF550-552.8 General
DF553-599.5 Eastern Empire, 323/476-1057. Constantine the Great
DF599.8-649 1057-1453
DF610-629 1204-1261. Latin Empire
DF630-649 1261-1453. Palaeologi
DF645-649 1453. Fall of Constantinople
DF701-951 Modern Greece
DF701-720 General
DF720.5-728 Description and travel
DF741-748 Social life and customs. Ethnography
DF750-854.32 History
DF750-760 General
DF765-787 Military, naval, and political history. Foreign relations
DF801-854.32 By period
DF801-801.9 Turkish rule, 1453-1821
DF802-832 1821-1913
DF804-815 War of Independence, 1821-1829
DF816-818 Kapodistrias, 1827-1831
DF833-854.32 20th century
DF848 Republic, 1924-1935
DF895-951 Local history and description
DF901 Regions, provinces, islands, etc., A-Z
DF901.C78-C88 Crete
DF915-936 Athens
DF951 Other cities, towns, etc., A-Z
DG Italy Malta
DJK Eastern Europe (General)
DK Russia. Soviet Union. Former Soviet Republics Poland
DR Balkan Peninsula
DS Asia (Cyprus included)
DT Africa
DU Oceania (South Seas)
DX Romanies
E & F History of the Americas
G Geography. Anthropology. Recreation
G Geography (General). Atlases. Maps
GA Mathematical geography. Cartography
GB Physical geography
GN Anthropology
GR Folklore
GT Manners and customs (General)
GV Recreation. Leisure
H Social Sciences
H Social sciences (General)
HA Statistics
HB Economic theory. Demography
HC Economic history and conditions
HD Industries. Land use. Labor
HE Transportation and communications
HF Commerce
HG Finance
HJ Public finance
HM Sociology (General)
HN Social history and conditions. Social problems. Social reform
HQ The family. Marriage. Women
HS Societies: secret, benevolent, etc.
HT Communities. Classes. Races
HV Social pathology. Social and public welfare. Criminology
HX Socialism. Communism. Anarchism
J Political Science
J General legislative and executive papers
JA Political science (General)
JC Political Theory
JN Political Institutions and public Administration
JS Local government. Municipal government
JV Colonies and colonization. Emigration and immigration. International migration
JZ International relations
K Law
K Law in general. Comparative and uniform law. Jurisprudence
KB Religious law in general. Comparative religious law. Jurisprudence
KBP Islamic law
KBR History of canon law
KJ-KKZ Europe
KJC2-9799 Roman law
KJP1-4999 Cyprus
KKF1-4999 Greece
L Education
L Education (General)
LA History of education
LB Theory and practice of education
LC Special aspects of education
LF Individual institutions – Europe
M Music
M Music
ML Literature on music
MT Instruction and study
N Fine Arts
N Visual arts
NA Architecture
NB Sculpture
NC Drawing. Design. Illustration
ND Painting
NE Print media
NK Decorative arts
P Language and Literature
P Philology. Linguistics
PA Greek language and literature
PN Literature (General)
PQ French literature - Italian literature - Spanish literature - Portuguese literature
PR English literature
Q Science
Q Science (General, Science history)
QA Mathematics
QB Astronomy
QC Physics
QE Geology
QH Natural history
QK Botany
QL Zoology
S Agriculture
S Agriculture (General, history of agriculture)
SB Plant culture
SD Forestry
SF Animal culture
T Technology
T Technology (General)
TN Mining engineering. Metallurgy
TR Photography
TS Manufactures
TT Handicrafts. Arts and crafts
U Military Science
U Military science (General)
UA Armies: Organization, distribution, military situation
V Naval Science
V Naval science (General)
VK Navigation. Merchant marine
VM Naval architecture. Shipbuilding. Marine engineering
Z Bibliography. Library Science. Information Resources (general)
Z Books (General). Writing. Paleography. Book industries and trade. Libraries. Bibliography
ZA Information resources (General)