Classification
320 - Political science
330 - Economics
333 - Economics of land & energy
9
363 - Other social problems & services
380 - Commerce, communications & transportation
600 - Technology
700 - The arts; fine & decorative arts
370 - Education
5
551 - Geology, hydrology & meteorology
4
610 - Medicine & health
4
720 - Architecture
4
900 - History & geography
4
000 - Computer science, information & general works
3
140 - Specific philosophical schools
3
620 - Engineering & allied operations
3
576 - Genetics & evolution
2
657 - Accounting
2
658 - General management
2
300 - Social sciences
1
414 - Phonology & phonetics
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
650 - Management & auxiliary services
1