Classification
000 - Computer science, information & general works
363 - Other social problems & services
333 - Economics of land & energy
12
700 - The arts; fine & decorative arts
9
370 - Education
8
330 - Economics
7
600 - Technology
7
320 - Political science
6
610 - Medicine & health
5
551 - Geology, hydrology & meteorology
4
140 - Specific philosophical schools
3
380 - Commerce, communications & transportation
3
500 - Natural sciences & mathematics
3
620 - Engineering & allied operations
3
658 - General management
3
100 - Philosophy & psychology
2
400 - Language
2
530 - Physics
2
540 - Chemistry & allied sciences
2
800 - Literature & rhetoric
2
900 - History & geography
2
361 - Social problems & social welfare in general
1
364 - Criminology
1
581 - Specific topics in natural history
1
630 - Agriculture & related technologies
1
720 - Architecture
1