Classification
300 - Social sciences
700 - The arts; fine & decorative arts
800 - Literature & rhetoric
900 - History & geography
100 - Philosophy & psychology
9
720 - Architecture
7
140 - Specific philosophical schools
6
200 - Religion
6
320 - Political science
5
333 - Economics of land & energy
5
610 - Medicine & health
5
301 - Sociology & anthropology
4
330 - Economics
4
340 - Law
4
363 - Other social problems & services
4
410 - Linguistics
4
380 - Commerce, communications & transportation
3
400 - Language
3
600 - Technology
3
620 - Engineering & allied operations
3
780 - Music
3
000 - Computer science, information & general works
2
170 - Ethics
2
370 - Education
2
576 - Genetics & evolution
2
580 - Plants (Botany)
2
630 - Agriculture & related technologies
2
120 - Epistemology, causation & humankind
1
297 - Islam, Babism & Bahai Faith
1
770 - Photography, photographs & computer art
1