Classification
000 - Computer science, information & general works
140 - Specific philosophical schools
330 - Economics
363 - Other social problems & services
600 - Technology
333 - Economics of land & energy
9
380 - Commerce, communications & transportation
8
620 - Engineering & allied operations
8
700 - The arts; fine & decorative arts
8
576 - Genetics & evolution
5
320 - Political science
4
610 - Medicine & health
4
658 - General management
4
370 - Education
3
551 - Geology, hydrology & meteorology
3
630 - Agriculture & related technologies
3
720 - Architecture
3
900 - History & geography
3
340 - Law
2
580 - Plants (Botany)
2
657 - Accounting
2
160 - Logic
1
361 - Social problems & social welfare in general
1
400 - Language
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
581 - Specific topics in natural history
1