Classification
320 - Political science
12
900 - History & geography
9
140 - Specific philosophical schools
8
100 - Philosophy & psychology
7
300 - Social sciences
6
370 - Education
6
330 - Economics
5
340 - Law
5
333 - Economics of land & energy
4
700 - The arts; fine & decorative arts
4
200 - Religion
3
301 - Sociology & anthropology
3
400 - Language
3
120 - Epistemology, causation & humankind
2
304 - Factors affecting social behavior
2
610 - Medicine & health
2
630 - Agriculture & related technologies
2
000 - Computer science, information & general works
1
170 - Ethics
1
360 - Social problems & services; associations
1
361 - Social problems & social welfare in general
1
363 - Other social problems & services
1
364 - Criminology
1
380 - Commerce, communications & transportation
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
600 - Technology
1
620 - Engineering & allied operations
1
720 - Architecture
1
780 - Music
1