Classification
170 - Ethics
330 - Economics
610 - Medicine & health
100 - Philosophy & psychology
8
600 - Technology
8
658 - General management
6
140 - Specific philosophical schools
5
200 - Religion
5
320 - Political science
5
333 - Economics of land & energy
5
620 - Engineering & allied operations
5
000 - Computer science, information & general works
4
300 - Social sciences
4
340 - Law
4
700 - The arts; fine & decorative arts
4
900 - History & geography
3
363 - Other social problems & services
2
370 - Education
2
720 - Architecture
2
301 - Sociology & anthropology
1
361 - Social problems & social welfare in general
1
380 - Commerce, communications & transportation
1
530 - Physics
1
551 - Geology, hydrology & meteorology
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1