Classification
140 - Specific philosophical schools
170 - Ethics
700 - The arts; fine & decorative arts
100 - Philosophy & psychology
15
600 - Technology
13
200 - Religion
12
320 - Political science
10
333 - Economics of land & energy
10
340 - Law
10
363 - Other social problems & services
10
900 - History & geography
10
610 - Medicine & health
9
330 - Economics
7
000 - Computer science, information & general works
6
620 - Engineering & allied operations
6
120 - Epistemology, causation & humankind
5
580 - Plants (Botany)
5
380 - Commerce, communications & transportation
4
551 - Geology, hydrology & meteorology
4
576 - Genetics & evolution
4
581 - Specific topics in natural history
4
630 - Agriculture & related technologies
4
800 - Literature & rhetoric
4
300 - Social sciences
3
301 - Sociology & anthropology
3
370 - Education
3
530 - Physics
3
720 - Architecture
3
304 - Factors affecting social behavior
2
400 - Language
2
410 - Linguistics
2
500 - Natural sciences & mathematics
2
296 - Judaism
1
361 - Social problems & social welfare in general
1
520 - Astronomy & allied sciences
1
612 - Human physiology
1
658 - General management
1