Classification
301 - Sociology & anthropology
410 - Linguistics
780 - Music
900 - History & geography
140 - Specific philosophical schools
3
400 - Language
3
700 - The arts; fine & decorative arts
3
800 - Literature & rhetoric
3
320 - Political science
2
100 - Philosophy & psychology
1
200 - Religion
1
300 - Social sciences
1
370 - Education
1
398 - Folklore
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
600 - Technology
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1