Classification
370 - Education
100 - Philosophy & psychology
29
900 - History & geography
13
320 - Political science
12
300 - Social sciences
11
170 - Ethics
10
700 - The arts; fine & decorative arts
10
140 - Specific philosophical schools
8
330 - Economics
7
333 - Economics of land & energy
7
000 - Computer science, information & general works
6
600 - Technology
6
200 - Religion
5
400 - Language
5
301 - Sociology & anthropology
4
380 - Commerce, communications & transportation
4
500 - Natural sciences & mathematics
4
340 - Law
3
610 - Medicine & health
3
363 - Other social problems & services
2
576 - Genetics & evolution
2
800 - Literature & rhetoric
2
120 - Epistemology, causation & humankind
1
297 - Islam, Babism & Bahai Faith
1
304 - Factors affecting social behavior
1
361 - Social problems & social welfare in general
1
410 - Linguistics
1
530 - Physics
1
540 - Chemistry & allied sciences
1
581 - Specific topics in natural history
1
612 - Human physiology
1
620 - Engineering & allied operations
1