Classification
400 - Language
000 - Computer science, information & general works
5
700 - The arts; fine & decorative arts
5
600 - Technology
4
333 - Economics of land & energy
3
330 - Economics
2
363 - Other social problems & services
2
551 - Geology, hydrology & meteorology
2
576 - Genetics & evolution
2
610 - Medicine & health
2
620 - Engineering & allied operations
2
720 - Architecture
2
140 - Specific philosophical schools
1
160 - Logic
1
320 - Political science
1
380 - Commerce, communications & transportation
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
530 - Physics
1
550 - Earth sciences
1
658 - General management
1
900 - History & geography
1