Classification
120 - Epistemology, causation & humankind
530 - Physics
900 - History & geography
100 - Philosophy & psychology
4
160 - Logic
2
170 - Ethics
2
500 - Natural sciences & mathematics
2
300 - Social sciences
1
520 - Astronomy & allied sciences
1
600 - Technology
1
700 - The arts; fine & decorative arts
1