Classification
300 - Social sciences
600 - Technology
780 - Music
100 - Philosophy & psychology
8
700 - The arts; fine & decorative arts
8
900 - History & geography
8
330 - Economics
7
320 - Political science
6
370 - Education
5
620 - Engineering & allied operations
5
000 - Computer science, information & general works
4
380 - Commerce, communications & transportation
4
400 - Language
4
410 - Linguistics
4
140 - Specific philosophical schools
3
630 - Agriculture & related technologies
3
770 - Photography, photographs & computer art
3
530 - Physics
2
720 - Architecture
2
301 - Sociology & anthropology
1
340 - Law
1
576 - Genetics & evolution
1
610 - Medicine & health
1
658 - General management
1