Classification
140 - Specific philosophical schools
6
340 - Law
363 - Other social problems & services
6
380 - Commerce, communications & transportation
6
620 - Engineering & allied operations
6
700 - The arts; fine & decorative arts
720 - Architecture
900 - History & geography
576 - Genetics & evolution
5
600 - Technology
5
300 - Social sciences
3
320 - Political science
3
500 - Natural sciences & mathematics
3
610 - Medicine & health
3
800 - Literature & rhetoric
3
170 - Ethics
2
333 - Economics of land & energy
2
580 - Plants (Botany)
2
630 - Agriculture & related technologies
2
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
301 - Sociology & anthropology
1
330 - Economics
1
370 - Education
1