Classification
000 - Computer science, information & general works
140 - Specific philosophical schools
333 - Economics of land & energy
620 - Engineering & allied operations
27
700 - The arts; fine & decorative arts
23
600 - Technology
21
610 - Medicine & health
15
900 - History & geography
12
330 - Economics
11
363 - Other social problems & services
11
380 - Commerce, communications & transportation
11
630 - Agriculture & related technologies
7
320 - Political science
6
500 - Natural sciences & mathematics
6
540 - Chemistry & allied sciences
6
576 - Genetics & evolution
5
300 - Social sciences
4
551 - Geology, hydrology & meteorology
4
580 - Plants (Botany)
4
581 - Specific topics in natural history
4
414 - Phonology & phonetics
3
612 - Human physiology
3
658 - General management
3
720 - Architecture
3
370 - Education
2
100 - Philosophy & psychology
1
170 - Ethics
1
361 - Social problems & social welfare in general
1
400 - Language
1
530 - Physics
1
657 - Accounting
1