Classification
000 - Computer science, information & general works
4
330 - Economics
340 - Law
363 - Other social problems & services
580 - Plants (Botany)
333 - Economics of land & energy
3
380 - Commerce, communications & transportation
2
630 - Agriculture & related technologies
2
700 - The arts; fine & decorative arts
2
140 - Specific philosophical schools
1
320 - Political science
1
361 - Social problems & social welfare in general
1
400 - Language
1
530 - Physics
1
551 - Geology, hydrology & meteorology
1
610 - Medicine & health
1
658 - General management
1