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