Classification
330 - Economics
580 - Plants (Botany)
700 - The arts; fine & decorative arts
000 - Computer science, information & general works
4
610 - Medicine & health
4
140 - Specific philosophical schools
3
320 - Political science
3
363 - Other social problems & services
3
551 - Geology, hydrology & meteorology
3
630 - Agriculture & related technologies
3
333 - Economics of land & energy
2
340 - Law
2
600 - Technology
2
361 - Social problems & social welfare in general
1
581 - Specific topics in natural history
1
620 - Engineering & allied operations
1
658 - General management
1