Classification
100 - Philosophy & psychology
3
120 - Epistemology, causation & humankind
300 - Social sciences
3
320 - Political science
3
900 - History & geography
170 - Ethics
1
200 - Religion
1
330 - Economics
1
340 - Law
1
363 - Other social problems & services
1
370 - Education
1
600 - Technology
1
700 - The arts; fine & decorative arts
1