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