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