Classification
000 - Computer science, information & general works
700 - The arts; fine & decorative arts
780 - Music
600 - Technology
9
900 - History & geography
7
140 - Specific philosophical schools
5
300 - Social sciences
5
330 - Economics
5
370 - Education
5
380 - Commerce, communications & transportation
5
620 - Engineering & allied operations
4
100 - Philosophy & psychology
3
320 - Political science
3
333 - Economics of land & energy
3
400 - Language
3
770 - Photography, photographs & computer art
3
301 - Sociology & anthropology
2
363 - Other social problems & services
2
410 - Linguistics
2
500 - Natural sciences & mathematics
2
630 - Agriculture & related technologies
2
658 - General management
2
720 - Architecture
2
800 - Literature & rhetoric
2
200 - Religion
1
361 - Social problems & social welfare in general
1
530 - Physics
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
590 - Animals (Zoology)
1
610 - Medicine & health
1
612 - Human physiology
1
791 - Public performances
1