Classification
140 - Specific philosophical schools
300 - Social sciences
320 - Political science
330 - Economics
26
900 - History & geography
25
340 - Law
17
100 - Philosophy & psychology
16
301 - Sociology & anthropology
13
370 - Education
13
600 - Technology
12
333 - Economics of land & energy
11
363 - Other social problems & services
11
700 - The arts; fine & decorative arts
9
610 - Medicine & health
8
170 - Ethics
7
304 - Factors affecting social behavior
7
620 - Engineering & allied operations
6
200 - Religion
5
551 - Geology, hydrology & meteorology
5
581 - Specific topics in natural history
5
361 - Social problems & social welfare in general
4
380 - Commerce, communications & transportation
4
800 - Literature & rhetoric
4
000 - Computer science, information & general works
3
500 - Natural sciences & mathematics
3
360 - Social problems & services; associations
2
400 - Language
2
576 - Genetics & evolution
2
630 - Agriculture & related technologies
2
120 - Epistemology, causation & humankind
1
297 - Islam, Babism & Bahai Faith
1
364 - Criminology
1
540 - Chemistry & allied sciences
1
658 - General management
1
720 - Architecture
1
780 - Music
1
791 - Public performances
1