Classification
100 - Philosophy & psychology
720 - Architecture
700 - The arts; fine & decorative arts
20
900 - History & geography
19
600 - Technology
9
320 - Political science
8
330 - Economics
7
620 - Engineering & allied operations
7
300 - Social sciences
6
000 - Computer science, information & general works
5
500 - Natural sciences & mathematics
4
800 - Literature & rhetoric
4
140 - Specific philosophical schools
3
370 - Education
3
530 - Physics
3
770 - Photography, photographs & computer art
3
780 - Music
3
301 - Sociology & anthropology
2
333 - Economics of land & energy
2
363 - Other social problems & services
2
380 - Commerce, communications & transportation
2
610 - Medicine & health
2
657 - Accounting
2
111 - Ontology
1
120 - Epistemology, causation & humankind
1
170 - Ethics
1
200 - Religion
1
340 - Law
1
400 - Language
1
410 - Linguistics
1
540 - Chemistry & allied sciences
1
576 - Genetics & evolution
1
658 - General management
1