Classification
100 - Philosophy & psychology
120 - Epistemology, causation & humankind
170 - Ethics
900 - History & geography
320 - Political science
3
160 - Logic
2
140 - Specific philosophical schools
1
200 - Religion
1
333 - Economics of land & energy
1
340 - Law
1
370 - Education
1
400 - Language
1
500 - Natural sciences & mathematics
1
520 - Astronomy & allied sciences
1
530 - Physics
1
610 - Medicine & health
1