Classification
100 - Philosophy & psychology
4
300 - Social sciences
4
320 - Political science
330 - Economics
4
410 - Linguistics
700 - The arts; fine & decorative arts
900 - History & geography
000 - Computer science, information & general works
3
400 - Language
3
333 - Economics of land & energy
2
370 - Education
2
600 - Technology
2
620 - Engineering & allied operations
2
630 - Agriculture & related technologies
2
770 - Photography, photographs & computer art
2
780 - Music
2
120 - Epistemology, causation & humankind
1
200 - Religion
1
301 - Sociology & anthropology
1
340 - Law
1
363 - Other social problems & services
1
380 - Commerce, communications & transportation
1
530 - Physics
1
658 - General management
1
720 - Architecture
1
800 - Literature & rhetoric
1