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