Classification
170 - Ethics
200 - Religion
320 - Political science
100 - Philosophy & psychology
20
300 - Social sciences
9
330 - Economics
9
140 - Specific philosophical schools
8
700 - The arts; fine & decorative arts
8
363 - Other social problems & services
6
301 - Sociology & anthropology
5
333 - Economics of land & energy
5
340 - Law
5
000 - Computer science, information & general works
4
581 - Specific topics in natural history
4
900 - History & geography
4
120 - Epistemology, causation & humankind
3
370 - Education
3
400 - Language
3
600 - Technology
3
410 - Linguistics
2
610 - Medicine & health
2
620 - Engineering & allied operations
2
297 - Islam, Babism & Bahai Faith
1
360 - Social problems & services; associations
1
361 - Social problems & social welfare in general
1
364 - Criminology
1
520 - Astronomy & allied sciences
1
530 - Physics
1
551 - Geology, hydrology & meteorology
1
800 - Literature & rhetoric
1