Classification
100 - Philosophy & psychology
2
140 - Specific philosophical schools
2
300 - Social sciences
2
301 - Sociology & anthropology
370 - Education
2
576 - Genetics & evolution
600 - Technology
2
620 - Engineering & allied operations
900 - History & geography
2
320 - Political science
1
330 - Economics
1
340 - Law
1
400 - Language
1
410 - Linguistics
1
630 - Agriculture & related technologies
1
780 - Music
1