Classification
100 - Philosophy & psychology
200 - Religion
700 - The arts; fine & decorative arts
900 - History & geography
3
170 - Ethics
2
301 - Sociology & anthropology
2
530 - Physics
2
140 - Specific philosophical schools
1
296 - Judaism
1
300 - Social sciences
1
320 - Political science
1
330 - Economics
1
520 - Astronomy & allied sciences
1
600 - Technology
1
620 - Engineering & allied operations
1
720 - Architecture
1