Classification
170 - Ethics
600 - Technology
620 - Engineering & allied operations
6
320 - Political science
5
100 - Philosophy & psychology
4
140 - Specific philosophical schools
4
000 - Computer science, information & general works
3
330 - Economics
3
340 - Law
3
610 - Medicine & health
3
630 - Agriculture & related technologies
3
363 - Other social problems & services
2
001 - Knowledge
1
174 - Occupational ethics
1
300 - Social sciences
1
301 - Sociology & anthropology
1
333 - Economics of land & energy
1
346 - Private law
1
361 - Social problems & social welfare in general
1
370 - Education
1
551 - Geology, hydrology & meteorology
1
660 - Chemical engineering
1
700 - The arts; fine & decorative arts
1
720 - Architecture
1
900 - History & geography
1