Classification
320 - Political science
363 - Other social problems & services
700 - The arts; fine & decorative arts
24
300 - Social sciences
21
330 - Economics
18
333 - Economics of land & energy
17
000 - Computer science, information & general works
12
600 - Technology
11
900 - History & geography
11
140 - Specific philosophical schools
10
301 - Sociology & anthropology
9
340 - Law
9
620 - Engineering & allied operations
9
551 - Geology, hydrology & meteorology
8
100 - Philosophy & psychology
7
200 - Religion
6
304 - Factors affecting social behavior
5
581 - Specific topics in natural history
5
630 - Agriculture & related technologies
5
720 - Architecture
5
170 - Ethics
4
380 - Commerce, communications & transportation
3
370 - Education
2
580 - Plants (Botany)
2
800 - Literature & rhetoric
2
120 - Epistemology, causation & humankind
1
361 - Social problems & social welfare in general
1
400 - Language
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
530 - Physics
1
540 - Chemistry & allied sciences
1
576 - Genetics & evolution
1
610 - Medicine & health
1