Classification
300 - Social sciences
320 - Political science
45
100 - Philosophy & psychology
27
900 - History & geography
19
140 - Specific philosophical schools
18
600 - Technology
12
304 - Factors affecting social behavior
11
340 - Law
10
370 - Education
8
700 - The arts; fine & decorative arts
8
120 - Epistemology, causation & humankind
7
330 - Economics
7
333 - Economics of land & energy
7
363 - Other social problems & services
6
380 - Commerce, communications & transportation
6
170 - Ethics
5
200 - Religion
5
610 - Medicine & health
5
301 - Sociology & anthropology
4
410 - Linguistics
4
576 - Genetics & evolution
3
581 - Specific topics in natural history
3
620 - Engineering & allied operations
3
800 - Literature & rhetoric
3
000 - Computer science, information & general works
1
296 - Judaism
1
297 - Islam, Babism & Bahai Faith
1
361 - Social problems & social welfare in general
1
364 - Criminology
1
400 - Language
1
500 - Natural sciences & mathematics
1
530 - Physics
1
551 - Geology, hydrology & meteorology
1
720 - Architecture
1