Classification
100 - Philosophy & psychology
300 - Social sciences
4
301 - Sociology & anthropology
600 - Technology
620 - Engineering & allied operations
330 - Economics
3
900 - History & geography
3
140 - Specific philosophical schools
2
370 - Education
2
576 - Genetics & evolution
2
630 - Agriculture & related technologies
2
700 - The arts; fine & decorative arts
2
200 - Religion
1
320 - Political science
1
333 - Economics of land & energy
1
340 - Law
1
363 - Other social problems & services
1
400 - Language
1
410 - Linguistics
1
530 - Physics
1
540 - Chemistry & allied sciences
1
610 - Medicine & health
1
780 - Music
1