Classification
000 - Computer science, information & general works
410 - Linguistics
600 - Technology
700 - The arts; fine & decorative arts
330 - Economics
5
400 - Language
5
333 - Economics of land & energy
4
620 - Engineering & allied operations
4
900 - History & geography
4
140 - Specific philosophical schools
3
320 - Political science
3
380 - Commerce, communications & transportation
3
576 - Genetics & evolution
3
630 - Agriculture & related technologies
3
100 - Philosophy & psychology
2
160 - Logic
2
300 - Social sciences
2
363 - Other social problems & services
2
370 - Education
2
500 - Natural sciences & mathematics
2
610 - Medicine & health
2
780 - Music
2
530 - Physics
1
551 - Geology, hydrology & meteorology
1
581 - Specific topics in natural history
1
720 - Architecture
1
770 - Photography, photographs & computer art
1