Classification
300 - Social sciences
320 - Political science
620 - Engineering & allied operations
700 - The arts; fine & decorative arts
600 - Technology
10
630 - Agriculture & related technologies
8
330 - Economics
6
900 - History & geography
6
000 - Computer science, information & general works
5
333 - Economics of land & energy
5
363 - Other social problems & services
5
140 - Specific philosophical schools
4
370 - Education
4
100 - Philosophy & psychology
3
380 - Commerce, communications & transportation
3
551 - Geology, hydrology & meteorology
3
720 - Architecture
3
780 - Music
3
340 - Law
2
400 - Language
2
410 - Linguistics
2
530 - Physics
2
170 - Ethics
1
301 - Sociology & anthropology
1
350 - Public administration & military science
1
500 - Natural sciences & mathematics
1
540 - Chemistry & allied sciences
1
658 - General management
1
770 - Photography, photographs & computer art
1