Classification
320 - Political science
100 - Philosophy & psychology
90
300 - Social sciences
82
900 - History & geography
66
330 - Economics
64
700 - The arts; fine & decorative arts
34
140 - Specific philosophical schools
33
340 - Law
25
301 - Sociology & anthropology
21
170 - Ethics
20
600 - Technology
15
200 - Religion
13
333 - Economics of land & energy
13
370 - Education
13
380 - Commerce, communications & transportation
13
363 - Other social problems & services
12
304 - Factors affecting social behavior
11
800 - Literature & rhetoric
9
400 - Language
8
576 - Genetics & evolution
8
720 - Architecture
8
610 - Medicine & health
7
350 - Public administration & military science
6
581 - Specific topics in natural history
6
000 - Computer science, information & general works
5
364 - Criminology
5
551 - Geology, hydrology & meteorology
5
410 - Linguistics
4
120 - Epistemology, causation & humankind
3
297 - Islam, Babism & Bahai Faith
3
361 - Social problems & social welfare in general
3
500 - Natural sciences & mathematics
3
620 - Engineering & allied operations
3
630 - Agriculture & related technologies
3
296 - Judaism
2
360 - Social problems & services; associations
2
657 - Accounting
2
780 - Music
2
650 - Management & auxiliary services
1
770 - Photography, photographs & computer art
1
791 - Public performances
1