Classification
000 - Computer science, information & general works
410 - Linguistics
600 - Technology
400 - Language
16
700 - The arts; fine & decorative arts
12
900 - History & geography
11
140 - Specific philosophical schools
8
330 - Economics
8
620 - Engineering & allied operations
7
333 - Economics of land & energy
6
370 - Education
6
380 - Commerce, communications & transportation
6
576 - Genetics & evolution
5
610 - Medicine & health
4
300 - Social sciences
3
320 - Political science
3
363 - Other social problems & services
3
500 - Natural sciences & mathematics
3
630 - Agriculture & related technologies
3
100 - Philosophy & psychology
2
160 - Logic
2
530 - Physics
2
658 - General management
2
780 - Music
2
551 - Geology, hydrology & meteorology
1
581 - Specific topics in natural history
1
720 - Architecture
1
770 - Photography, photographs & computer art
1
800 - Literature & rhetoric
1