Classification
400 - Language
410 - Linguistics
180
900 - History & geography
180
700 - The arts; fine & decorative arts
120
800 - Literature & rhetoric
108
320 - Political science
65
100 - Philosophy & psychology
64
370 - Education
64
300 - Social sciences
60
301 - Sociology & anthropology
56
140 - Specific philosophical schools
50
380 - Commerce, communications & transportation
49
200 - Religion
36
000 - Computer science, information & general works
35
600 - Technology
27
333 - Economics of land & energy
26
340 - Law
23
330 - Economics
22
363 - Other social problems & services
21
780 - Music
19
304 - Factors affecting social behavior
18
297 - Islam, Babism & Bahai Faith
17
620 - Engineering & allied operations
17
576 - Genetics & evolution
15
500 - Natural sciences & mathematics
12
610 - Medicine & health
12
398 - Folklore
10
414 - Phonology & phonetics
9
170 - Ethics
7
581 - Specific topics in natural history
6
770 - Photography, photographs & computer art
6
120 - Epistemology, causation & humankind
5
296 - Judaism
5
658 - General management
5
551 - Geology, hydrology & meteorology
4
580 - Plants (Botany)
4
720 - Architecture
4
361 - Social problems & social welfare in general
3
530 - Physics
2
540 - Chemistry & allied sciences
2
630 - Agriculture & related technologies
2
791 - Public performances
2
920 - Biography, genealogy & insignia
2
306 - Culture & institutions
1
360 - Social problems & services; associations
1
364 - Criminology
1
491 - East Indo-European & Celtic languages
1
499 - Austronesian & other languages
1
520 - Astronomy & allied sciences
1
590 - Animals (Zoology)
1
more ...