Classification
333 - Economics of land & energy
363 - Other social problems & services
630 - Agriculture & related technologies
700 - The arts; fine & decorative arts
000 - Computer science, information & general works
5
330 - Economics
5
551 - Geology, hydrology & meteorology
3
140 - Specific philosophical schools
2
320 - Political science
2
600 - Technology
2
610 - Medicine & health
2
620 - Engineering & allied operations
2
301 - Sociology & anthropology
1
380 - Commerce, communications & transportation
1
580 - Plants (Botany)
1
658 - General management
1
900 - History & geography
1