Classification
100 - Philosophy & psychology
330 - Economics
600 - Technology
6
630 - Agriculture & related technologies
700 - The arts; fine & decorative arts
620 - Engineering & allied operations
5
333 - Economics of land & energy
4
000 - Computer science, information & general works
3
300 - Social sciences
3
320 - Political science
3
363 - Other social problems & services
3
410 - Linguistics
2
610 - Medicine & health
2
780 - Music
2
900 - History & geography
2
140 - Specific philosophical schools
1
170 - Ethics
1
200 - Religion
1
301 - Sociology & anthropology
1
370 - Education
1
380 - Commerce, communications & transportation
1
400 - Language
1
530 - Physics
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
720 - Architecture
1
770 - Photography, photographs & computer art
1