Classification
100 - Philosophy & psychology
2
300 - Social sciences
2
301 - Sociology & anthropology
576 - Genetics & evolution
780 - Music
140 - Specific philosophical schools
1
370 - Education
1
400 - Language
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
600 - Technology
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1
700 - The arts; fine & decorative arts
1
900 - History & geography
1