Classification
340 - Law
620 - Engineering & allied operations
11
700 - The arts; fine & decorative arts
900 - History & geography
600 - Technology
10
140 - Specific philosophical schools
6
320 - Political science
4
363 - Other social problems & services
4
380 - Commerce, communications & transportation
4
500 - Natural sciences & mathematics
4
576 - Genetics & evolution
4
720 - Architecture
4
330 - Economics
2
333 - Economics of land & energy
2
580 - Plants (Botany)
2
610 - Medicine & health
2
630 - Agriculture & related technologies
2
170 - Ethics
1
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
300 - Social sciences
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
361 - Social problems & social welfare in general
1
370 - Education
1
530 - Physics
1
800 - Literature & rhetoric
1