Classification
000 - Computer science, information & general works
370 - Education
400 - Language
700 - The arts; fine & decorative arts
600 - Technology
6
610 - Medicine & health
6
380 - Commerce, communications & transportation
5
320 - Political science
4
333 - Economics of land & energy
4
720 - Architecture
4
900 - History & geography
4
140 - Specific philosophical schools
3
100 - Philosophy & psychology
2
330 - Economics
2
410 - Linguistics
2
551 - Geology, hydrology & meteorology
2
576 - Genetics & evolution
2
620 - Engineering & allied operations
2
658 - General management
2
300 - Social sciences
1
360 - Social problems & services; associations
1
363 - Other social problems & services
1
500 - Natural sciences & mathematics
1
530 - Physics
1
580 - Plants (Botany)
1
630 - Agriculture & related technologies
1
780 - Music
1