Classification
630 - Agriculture & related technologies
000 - Computer science, information & general works
12
700 - The arts; fine & decorative arts
11
580 - Plants (Botany)
10
600 - Technology
9
610 - Medicine & health
9
620 - Engineering & allied operations
8
333 - Economics of land & energy
7
363 - Other social problems & services
7
330 - Economics
6
900 - History & geography
6
551 - Geology, hydrology & meteorology
4
320 - Political science
3
304 - Factors affecting social behavior
2
370 - Education
2
500 - Natural sciences & mathematics
2
800 - Literature & rhetoric
2
140 - Specific philosophical schools
1
300 - Social sciences
1
361 - Social problems & social welfare in general
1
540 - Chemistry & allied sciences
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
658 - General management
1
720 - Architecture
1