Classification
100 - Philosophy & psychology
330 - Economics
576 - Genetics & evolution
600 - Technology
300 - Social sciences
3
900 - History & geography
3
140 - Specific philosophical schools
2
320 - Political science
2
370 - Education
2
620 - Engineering & allied operations
2
000 - Computer science, information & general works
1
301 - Sociology & anthropology
1
333 - Economics of land & energy
1
340 - Law
1
350 - Public administration & military science
1
363 - Other social problems & services
1
500 - Natural sciences & mathematics
1
530 - Physics
1
540 - Chemistry & allied sciences
1
581 - Specific topics in natural history
1
610 - Medicine & health
1
658 - General management
1
700 - The arts; fine & decorative arts
1
720 - Architecture
1