Classification
300 - Social sciences
333 - Economics of land & energy
370 - Education
12
600 - Technology
620 - Engineering & allied operations
7
320 - Political science
5
330 - Economics
5
610 - Medicine & health
5
900 - History & geography
5
363 - Other social problems & services
4
700 - The arts; fine & decorative arts
4
000 - Computer science, information & general works
3
301 - Sociology & anthropology
3
500 - Natural sciences & mathematics
3
630 - Agriculture & related technologies
3
100 - Philosophy & psychology
2
140 - Specific philosophical schools
2
400 - Language
2
540 - Chemistry & allied sciences
2
340 - Law
1
380 - Commerce, communications & transportation
1
530 - Physics
1
551 - Geology, hydrology & meteorology
1