Classification
100 - Philosophy & psychology
330 - Economics
576 - Genetics & evolution
900 - History & geography
320 - Political science
10
300 - Social sciences
5
140 - Specific philosophical schools
3
301 - Sociology & anthropology
3
333 - Economics of land & energy
3
600 - Technology
3
340 - Law
2
363 - Other social problems & services
2
370 - Education
2
581 - Specific topics in natural history
2
620 - Engineering & allied operations
2
658 - General management
2
170 - Ethics
1
350 - Public administration & military science
1
500 - Natural sciences & mathematics
1
530 - Physics
1
540 - Chemistry & allied sciences
1
610 - Medicine & health
1
700 - The arts; fine & decorative arts
1
720 - Architecture
1
920 - Biography, genealogy & insignia
1