Classification
300 - Social sciences
3
700 - The arts; fine & decorative arts
3
720 - Architecture
780 - Music
900 - History & geography
100 - Philosophy & psychology
2
320 - Political science
2
330 - Economics
2
600 - Technology
2
770 - Photography, photographs & computer art
2
000 - Computer science, information & general works
1
410 - Linguistics
1
530 - Physics
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1