Classification
330 - Economics
3
333 - Economics of land & energy
3
370 - Education
580 - Plants (Botany)
658 - General management
000 - Computer science, information & general works
2
600 - Technology
2
610 - Medicine & health
2
630 - Agriculture & related technologies
2
700 - The arts; fine & decorative arts
2
140 - Specific philosophical schools
1
336 - Public finance
1
363 - Other social problems & services
1
380 - Commerce, communications & transportation
1
400 - Language
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
620 - Engineering & allied operations
1