Classification
300 - Social sciences
330 - Economics
333 - Economics of land & energy
8
363 - Other social problems & services
600 - Technology
620 - Engineering & allied operations
700 - The arts; fine & decorative arts
5
320 - Political science
4
610 - Medicine & health
4
630 - Agriculture & related technologies
4
140 - Specific philosophical schools
3
900 - History & geography
3
301 - Sociology & anthropology
2
370 - Education
2
000 - Computer science, information & general works
1
100 - Philosophy & psychology
1
304 - Factors affecting social behavior
1
340 - Law
1
350 - Public administration & military science
1
400 - Language
1
500 - Natural sciences & mathematics
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1