Classification
300 - Social sciences
700 - The arts; fine & decorative arts
320 - Political science
27
900 - History & geography
21
330 - Economics
16
363 - Other social problems & services
14
140 - Specific philosophical schools
10
301 - Sociology & anthropology
10
333 - Economics of land & energy
8
100 - Philosophy & psychology
7
000 - Computer science, information & general works
6
600 - Technology
5
200 - Religion
4
370 - Education
4
400 - Language
4
304 - Factors affecting social behavior
3
410 - Linguistics
3
500 - Natural sciences & mathematics
3
551 - Geology, hydrology & meteorology
3
620 - Engineering & allied operations
3
720 - Architecture
3
800 - Literature & rhetoric
3
340 - Law
2
361 - Social problems & social welfare in general
2
610 - Medicine & health
2
770 - Photography, photographs & computer art
2
780 - Music
2
120 - Epistemology, causation & humankind
1
170 - Ethics
1
297 - Islam, Babism & Bahai Faith
1
360 - Social problems & services; associations
1
380 - Commerce, communications & transportation
1
530 - Physics
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
630 - Agriculture & related technologies
1
943 - Central Europe; Germany
1