Classification
100 - Philosophy & psychology
2
140 - Specific philosophical schools
4
170 - Ethics
320 - Political science
2
340 - Law
2
361 - Social problems & social welfare in general
363 - Other social problems & services
1
600 - Technology
1
610 - Medicine & health
2
620 - Engineering & allied operations
1
700 - The arts; fine & decorative arts
1
900 - History & geography