Classification
140 - Specific philosophical schools
330 - Economics
380 - Commerce, communications & transportation
600 - Technology
658 - General management
000 - Computer science, information & general works
4
333 - Economics of land & energy
3
363 - Other social problems & services
3
610 - Medicine & health
3
700 - The arts; fine & decorative arts
3
551 - Geology, hydrology & meteorology
2
620 - Engineering & allied operations
2
630 - Agriculture & related technologies
2
320 - Political science
1
336 - Public finance
1
361 - Social problems & social welfare in general
1
500 - Natural sciences & mathematics
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
720 - Architecture
1
800 - Literature & rhetoric
1
900 - History & geography
1