Classification
170 - Ethics
100 - Philosophy & psychology
14
320 - Political science
12
700 - The arts; fine & decorative arts
10
140 - Specific philosophical schools
8
610 - Medicine & health
6
800 - Literature & rhetoric
5
900 - History & geography
5
000 - Computer science, information & general works
4
200 - Religion
4
300 - Social sciences
4
304 - Factors affecting social behavior
4
370 - Education
4
120 - Epistemology, causation & humankind
3
380 - Commerce, communications & transportation
3
600 - Technology
3
301 - Sociology & anthropology
2
330 - Economics
2
400 - Language
2
410 - Linguistics
2
500 - Natural sciences & mathematics
2
620 - Engineering & allied operations
2
297 - Islam, Babism & Bahai Faith
1
333 - Economics of land & energy
1
340 - Law
1
530 - Physics
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
720 - Architecture
1
920 - Biography, genealogy & insignia
1