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