Classification
000 - Computer science, information & general works
320 - Political science
900 - History & geography
12
300 - Social sciences
11
330 - Economics
10
333 - Economics of land & energy
10
700 - The arts; fine & decorative arts
8
363 - Other social problems & services
7
100 - Philosophy & psychology
6
200 - Religion
5
140 - Specific philosophical schools
4
600 - Technology
4
800 - Literature & rhetoric
4
301 - Sociology & anthropology
3
380 - Commerce, communications & transportation
3
400 - Language
3
410 - Linguistics
3
620 - Engineering & allied operations
3
304 - Factors affecting social behavior
2
370 - Education
2
551 - Geology, hydrology & meteorology
2
630 - Agriculture & related technologies
2
120 - Epistemology, causation & humankind
1
170 - Ethics
1
297 - Islam, Babism & Bahai Faith
1
340 - Law
1
540 - Chemistry & allied sciences
1
576 - Genetics & evolution
1
610 - Medicine & health
1
658 - General management
1
720 - Architecture
1