Classification
140 - Specific philosophical schools
170 - Ethics
200 - Religion
100 - Philosophy & psychology
16
700 - The arts; fine & decorative arts
12
320 - Political science
8
330 - Economics
6
333 - Economics of land & energy
6
363 - Other social problems & services
6
600 - Technology
6
900 - History & geography
6
000 - Computer science, information & general works
5
300 - Social sciences
5
410 - Linguistics
5
800 - Literature & rhetoric
5
120 - Epistemology, causation & humankind
4
301 - Sociology & anthropology
4
340 - Law
4
370 - Education
4
610 - Medicine & health
4
581 - Specific topics in natural history
3
400 - Language
2
530 - Physics
2
580 - Plants (Botany)
2
620 - Engineering & allied operations
2
297 - Islam, Babism & Bahai Faith
1
361 - Social problems & social welfare in general
1
380 - Commerce, communications & transportation
1
500 - Natural sciences & mathematics
1
520 - Astronomy & allied sciences
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
630 - Agriculture & related technologies
1