Classification
330 - Economics
500 - Natural sciences & mathematics
600 - Technology
4
620 - Engineering & allied operations
4
658 - General management
900 - History & geography
000 - Computer science, information & general works
2
700 - The arts; fine & decorative arts
2
100 - Philosophy & psychology
1
300 - Social sciences
1
363 - Other social problems & services
1
370 - Education
1
400 - Language
1
530 - Physics
1
540 - Chemistry & allied sciences
1
576 - Genetics & evolution
1
720 - Architecture
1
780 - Music
1