Classification
140 - Specific philosophical schools
380 - Commerce, communications & transportation
658 - General management
000 - Computer science, information & general works
9
330 - Economics
9
600 - Technology
8
610 - Medicine & health
7
700 - The arts; fine & decorative arts
7
363 - Other social problems & services
6
370 - Education
6
333 - Economics of land & energy
5
551 - Geology, hydrology & meteorology
4
576 - Genetics & evolution
4
320 - Political science
3
620 - Engineering & allied operations
3
630 - Agriculture & related technologies
3
900 - History & geography
3
297 - Islam, Babism & Bahai Faith
2
580 - Plants (Botany)
2
170 - Ethics
1
300 - Social sciences
1
336 - Public finance
1
361 - Social problems & social welfare in general
1
400 - Language
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
530 - Physics
1
720 - Architecture
1
800 - Literature & rhetoric
1