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