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