Classification
120 - Epistemology, causation & humankind
900 - History & geography
100 - Philosophy & psychology
20
320 - Political science
9
170 - Ethics
7
333 - Economics of land & energy
7
700 - The arts; fine & decorative arts
7
000 - Computer science, information & general works
6
200 - Religion
6
800 - Literature & rhetoric
6
140 - Specific philosophical schools
5
300 - Social sciences
5
530 - Physics
5
600 - Technology
5
610 - Medicine & health
4
620 - Engineering & allied operations
4
160 - Logic
3
340 - Law
3
370 - Education
3
410 - Linguistics
3
500 - Natural sciences & mathematics
3
330 - Economics
2
350 - Public administration & military science
2
363 - Other social problems & services
2
380 - Commerce, communications & transportation
2
400 - Language
2
520 - Astronomy & allied sciences
2
551 - Geology, hydrology & meteorology
2
920 - Biography, genealogy & insignia
2
301 - Sociology & anthropology
1
540 - Chemistry & allied sciences
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
657 - Accounting
1
658 - General management
1
720 - Architecture
1
791 - Public performances
1