Classification
900 - History & geography
128
300 - Social sciences
50
100 - Philosophy & psychology
27
340 - Law
26
320 - Political science
20
370 - Education
11
700 - The arts; fine & decorative arts
11
600 - Technology
10
610 - Medicine & health
9
200 - Religion
8
500 - Natural sciences & mathematics
8
301 - Sociology & anthropology
5
333 - Economics of land & energy
5
800 - Literature & rhetoric
5
140 - Specific philosophical schools
4
530 - Physics
4
170 - Ethics
3
510 - Mathematics
3
000 - Computer science, information & general works
2
330 - Economics
2
501 - Philosophy & theory
2
576 - Genetics & evolution
2
620 - Engineering & allied operations
2
001 - Knowledge
1
120 - Epistemology, causation & humankind
1
160 - Logic
1
297 - Islam, Babism & Bahai Faith
1
304 - Factors affecting social behavior
1
363 - Other social problems & services
1
364 - Criminology
1
378 - Higher education
1
380 - Commerce, communications & transportation
1
400 - Language
1
540 - Chemistry & allied sciences
1
550 - Earth sciences
1
581 - Specific topics in natural history
1
709 - Historical, geographic & persons treatment
1
720 - Architecture
1