Classification
140 - Specific philosophical schools
200 - Religion
700 - The arts; fine & decorative arts
900 - History & geography
16
170 - Ethics
14
100 - Philosophy & psychology
13
320 - Political science
9
301 - Sociology & anthropology
7
363 - Other social problems & services
7
600 - Technology
7
581 - Specific topics in natural history
6
000 - Computer science, information & general works
5
333 - Economics of land & energy
5
330 - Economics
4
370 - Education
4
120 - Epistemology, causation & humankind
3
340 - Law
3
380 - Commerce, communications & transportation
3
410 - Linguistics
3
610 - Medicine & health
3
800 - Literature & rhetoric
3
361 - Social problems & social welfare in general
2
551 - Geology, hydrology & meteorology
2
720 - Architecture
2
770 - Photography, photographs & computer art
2
780 - Music
2
128 - Humankind
1
160 - Logic
1
233 - Humankind
1
297 - Islam, Babism & Bahai Faith
1
300 - Social sciences
1
304 - Factors affecting social behavior
1
360 - Social problems & services; associations
1
400 - Language
1
520 - Astronomy & allied sciences
1
530 - Physics
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
630 - Agriculture & related technologies
1